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题目:古典问题:有一对兔子从出生后第3个月起每个月都…

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题目:古典问题:有一对兔子从出生后第3个月起每个月都…题目:古典问题:有一对兔子从出生后第3个月起每个月都… 自己收集整理的 错误在所难免 仅供参考交流 如有错误 请指正~谢谢 题目:古典问题‎‎:有一对兔子 从出生后第3个月起每个月都生一对兔子 小兔子长到第三个月后每个月又生一对兔子 假如 个月的兔子总数为多少, __________________________________________________________________ 程序分析:兔子‎‎的规律为数列1,1,2,3,5,8,13,21.... ________________...
题目:古典问题:有一对兔子从出生后第3个月起每个月都…
题目:古典问题:有一对兔子从出生后第3个月起每个月都… 自己收集整理的 错误在所难免 仅供参考交流 如有错误 请指正~谢谢 题目:古典问题‎‎:有一对兔子 从出生后第3个月起每个月都生一对兔子 小兔子长到第三个月后每个月又生一对兔子 假如 个月的兔子总数为多少, __________________________________________________________________ 程序:兔子‎‎的规律为数列1,1,2,3,5,8,13,21.... ___________________________________________________________________ 程序源代码: main() { long f1,f2; int i; f1=f2=1; for(i=1;i<=20;i++) { printf("%12ld %12ld",f1,f2); if(i%2==0) printf("\n");/*控制输出 每行四个*/ f1=f1+f2;/*前两个月加起来赋值给第三个月*/ f2=f1+f2;/*前两个月加起来赋值给第三个月*/ } } 题目:判断101-200之间有多少个素数 并输出所有素数 __________________________________________________________________ 程序分析:判断素数的方法:用一个数分别去除2到sqrt(这个数) 如果能被整除 则明此数不是素数 反之是素数 程序源代码: #include "math.h" main() { int m,i,k,h=0,leap=1; printf("\n"); for(m=101;m<=200;m++) { k=sqrt(m+1); for(i=2;i<=k;i++) if(m%i==0) {leap=0;break;} if(leap) {printf("%-4d",m);h++; if(h%10==0) printf("\n"); } leap=1; } printf("\nThe total is %d",h); } 题目:打印出所有的?水仙花数? 所谓?水仙花数?是指一个三位数 其各位数字立方和等于该数本身 例如:153是一 为153=1的三次方,5的三次方,3的三次方 __________________________________________________________________ 程序分析:利用for循环控制100-999个数 每个数分解出个位 十位 百位 ___________________________________________________________________ 程序源代码: main() { int i,j,k,n; printf("'water flower'number is:"); for(n=100;n<1000;n++) { i=n/100;/*分解出百位*/ j=n/10%10;/*分解出十位*/ k=n%10;/*分解出个位*/ if(i*100+j*10+k==i*i*i+j*j*j+k*k*k) { printf("%-5d",n); } } printf("\n"); } 题目:将一个正整数分解质因数 例如:输入90,打印出90=2*3*3*5 __________________________________________________________________ 程序分析:对n进行分解质因数 应先找到一个最小的质数k 然后按下述步骤完成: (1)如果这个质数恰等于n 则说明分解质因数的过程已经结束 打印出即可 (2)如果n<>k 但n能被k整除 则应打印出k的值 并用n除以k的商,作为新的正整数你n,重复执行第一步 (3)如果n不能被k整除 则用k+1作为k的值,重复执行第一步 ___________________________________________________________________ 程序源代码: /* zheng int is divided yinshu*/ main() { int n,i; printf("\nplease input a number:\n"); scanf("%d",&n); printf("%d=",n); for(i=2;i<=n;i++) { while(n!=i) { if(n%i==0) { printf("%d*",i); n=n/i; } else break; } } printf("%d",n); } 题目:利用条件运算符的嵌套来完成此题:学习成绩>=90分的同学用A表示 60-89分之间的用B表示 60分以下的用C __________________________________________________________________ 程序分析:(a>b)?a:b这是条件运算符的基本例子 ___________________________________________________________________ 程序源代码: main() { int score; char grade; printf("please input a score\n"); scanf("%d",&score); grade=score>=90?'A':(score>=60?'B':'C'); printf("%d belongs to %c",score,grade); } 题目:输入两个正整数m和n 求其最大公约数和最小公倍数 __________________________________________________________________ 程序分析:利用辗除法 ___________________________________________________________________ 程序源代码: main() { int a,b,num1,num2,temp; printf("please input two numbers:\n"); scanf("%d,%d",&num1,&num2); if(num1 { temp=num1; num1=num2; num2=temp; } a=num1;b=num2; while(b!=0)/*利用辗除法 直到b为0为止*/ { temp=a%b; a=b; b=temp; } printf("gongyueshu:%d\n",a); printf("gongbeishu:%d\n",num1*num2/a); } 题目:输入一行字符 分别统计出其中英文字母、空格、数字和其它字符的个数 __________________________________________________________________ 程序分析:利用‎‎while语句,条件为输入的字符不为'\n'. ___________________________________________________________________ 程序源代码: #include "stdio.h" main() {char c; int letters=0,space=0,digit=0,others=0; printf("please input some characters\n"); while((c=getchar())!='\n') { if(c>='a'&&c<='z'||c>='A'&&c<='Z') letters++; else if(c==' ') space++; else if(c>='0'&&c<='9') digit++; else others++; } printf("all in all:char=%d space=%d digit=%d others=%d\n",letters,space,digit,others); } 题目:求s=a+aa+aaa+aaaa+aa...a的值 其中a是一个数字 例如2+22+222+2222+22222(此时共有5个数相加) __________________________________________________________________ 程序分析:关键是计算出每一项的值 ___________________________________________________________________ 程序源代码: main() { int a,n,count=1; long int sn=0,tn=0; printf("please input a and n\n"); scanf("%d,%d",&a,&n); printf("a=%d,n=%d\n",a,n); while(count<=n) { tn=tn+a; sn=sn+tn; a=a*10; ++count; } printf("a+aa+...=%ld\n",sn); } 题目:一个数如果恰好等于它的因子之和 这个数就称为?完数? 例如6=1,2,3.编程找出1000以内的所有完数 ___________________________________________________________________ 程序源代码: main() { static int k[10]; int i,j,n,s; for(j=2;j<1000;j++) { n=-1; s=j; for(i=1;i { if((j%i)==0) { n++; s=s-i; k[n]=i; } } if(s==0) { printf("%d is a wanshu",j); for(i=0;i printf("%d,",k[i]); printf("%d\n",k[n]); } } } 题目:一球从100米高度自由落下 每次落地后反跳回原高度的一半;再落下 求它在第10次落地时 共经过多少米,第 ___________________________________________________________________ 程序源代码: main() { float sn=100.0,hn=sn/2; int n; for(n=2;n<=10;n++) { sn=sn+2*hn;/*第n次落地时共经过的米数*/ hn=hn/2; /*第n次反跳高度*/ } printf("the total of road is %f\n",sn); printf("the tenth is %f meter\n",hn); } 题目:一只猴子摘了N个桃子第一天吃了一半又多吃了一个,第二天又吃了余下的 一半又多吃了一个,到第十天的时候发现还 ___________________________________________________________________ 程序源代码: /* 猴子吃桃问题*/ main() { int i,s,n=1; for(i=1;i<10;i++) { s=(n+1)*2 n=s; } printf("第一天共摘了%d个桃\n",s); } 迭代法求方程根 ___________________________________________________________________ /* 迭代法求一个数的平方根*/ 1.0E-6 /*控制解的精度*/ #define Epsilon #include main() { float a,x0,x1; printf("请输入要求的数:"); scanf("%f",&a); x0=a/2; x1=(x0+a/x0)/2; while(fabs(x1-x0)>=Epsilon) { x0=x1; x1=(x0+a/x0)/2; } printf("%f的平方根:%f.5\n",x1); } /* 上题的另一种算法*/ #define Epsilon 1.0E-6 /*控制解的精度*/ #include #include main() { float num,pre,this; do { scanf("%f",&num);/*输入要求平方根的数*/ }while(num<0); if (num==0) printf("the root is 0"); else { this=1; do { pre=this; this=(pre+num/pre)/2; }while(fabs(pre-this)>Epsilon);/*用解的精度 控制循环次数*/ } printf("the root is %f",this); } 用牛顿迭代法求方程2*x*x*x-4*x*x+3*x-6 的根 /* 牛顿迭代法*/ #define Epsilon 1.0E-6 /*控制解的精度*/ #include main() { float x1,x0=1.5; x1=x0-(2*x0*x0*x0-4*x0*x0+3*x0-6)/(6*x0*x0-8*x0+3); while(fabs(x1-x0>=Epsilon) { x0=x1; x1=x0-(2*x0*x0*x0-4*x0*x0+3*x0-6)/(6*x0*x0-8*x0+3); } printf("方程的根为%f\n",x1); } 用二分法求上题 /* 二分法*/ #define Epsilon 1.0E-5 /*控制解的精度*/ #include main() { folat x1,x2,x0,f1,f2,f0; x0=(x1+x2)/2; f0=2*x0*x0*x0-4*x0*x0+3*x0-6; /* 求中点的函数值*/ while(fabs(f0)>=Epsilon) { if(f0*f1<0) { x2=x0; f2=2*x2*x2*x2-4*x2*x2+3*x2-6; } if(f0*f2<0) { x1=x0; f1=2*x1*x1*x1-4*x1*x1+3*x1-6; } x0=(x1+x2)/2; f0=2*x0*x0*x0-4*x0*x0+3*x0-6; } printf("用二分法求得方程的根:%f\n",x0); } 题目:打印出如下图案(菱形) * *** ****** ******** ****** *** * ___________________________________________________________________ 程序分析:先把图形分成两部分来看待 前四行一个规律 后三行一个规律 利用双重for循环 第一层控制行 第二层控制列 ___________________________________________________________________ 程序源代码: main() { int i,j,k; for(i=0;i<=3;i++) { for(j=0;j<=2-i;j++) printf(" "); for(k=0;k<=2*i;k++) printf("*"); printf("\n"); } for(i=0;i<=2;i++) { for(j=0;j<=i;j++) printf(" "); for(k=0;k<=4-2*i;k++) printf("*"); printf("\n"); } } 题目:一个5位数 判断它是不是回文数 即12321是回文数 个位与万位相同 十位与千位相同 ___________________________________________________________________ 程序分析:同29例 ___________________________________________________________________ 程序源代码: main( ) { long ge,shi,qian,wan,x; scanf("%ld",&x); wan=x/10000; qian=x%10000/1000; shi=x%100/10; ge=x%10; if (ge==wan&&shi==qian)/*个位等于万位并且十位等于千位*/ printf("this number is a huiwen\n"); else printf("this number is not a huiwen\n"); } 题目:请输入星期几的第一个字母来判断一下是星期几 如果第一个字母一样 则继续判断第二个字母 ___________________________________________________________________ 程序分析:用情况语句比较好 如果第一个字母一样 则判断用情况语句或if语句判断第二个字母 ___________________________________________________________________ 程序源代码: #include void main() { char letter; printf("please input the first letter of someday\n"); while ((letter=getch())!='Y') /*当所按字母为Y时才结束*/ { switch (letter) {case 'S':printf("please input second letter\n"); if((letter=getch())=='a') printf("saturday\n"); else if ((letter=getch())=='u') printf("sunday\n"); else printf("data error\n"); break; case 'F':printf("friday\n");break; case 'M':printf("monday\n");break; case 'T':printf("please input second letter\n"); if((letter=getch())=='u') printf("tuesday\n"); else if ((letter=getch())=='h') printf("thursday\n"); else printf("data error\n"); break; case 'W':printf("wednesday\n");break; default: printf("data error\n"); } } } change color, do you want to try it. Please hurry up! 题目:Press any key to ___________________________________________________________________ 程序源代码: #include void main(void) { int color; for (color = 0; color < 8; color++) { textbackground(color); /*设置文本的背景颜色*/ cprintf("This is color %d\r\n", color); cprintf("Press any key to continue\r\n"); getch(); /*输入字符看不见*/ } } 题目:学习gotoxy()与clrscr()函数 ___________________________________________________________________ 程序源代码: #include void main(void) { clrscr(); /*清屏函数*/ textbackground(2); gotoxy(1, 5); /*定位函数*/ cprintf("Output at row 5 column 1\n"); textbackground(3); gotoxy(20, 10); cprintf("Output at row 10 column 20\n"); } 题目:练习函数调用 ___________________________________________________________________ 程序源代码: #include void hello_world(void) { printf("Hello, world!\n"); } void three_hellos(void) { int counter; for (counter = 1; counter <= 3; counter++) hello_world();/*调用此函数*/ } void main(void) { three_hellos();/*调用此函数*/ } 题目:文本颜色设置 ___________________________________________________________________ 程序源代码: #include void main(void) { int color; for (color = 1; color < 16; color++) { textcolor(color);/*设置文本颜色*/ cprintf("This is color %d\r\n", color); } textcolor(128 + 15); cprintf("This is blinking\r\n"); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:10:20 题目:求100之内的素数 ___________________________________________________________________ 程序源代码: #include #include "math.h" #define N 101 main() { int i,j,line,a[N]; for(i=2;ia[j]) min=j; tem=a; a=a[min]; a[min]=tem; } /*output data*/ printf("After sorted \n"); for(i=0;iend) a[10]=number; else {for(i=0;i<10;i++) { if(a>number) {temp1=a; a=number; for(j=i+1;j<11;j++) {temp2=a[j]; a[j]=temp1; temp1=temp2; } break; } } } for(i=0;i<11;i++) printf("%6d",a); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:11:36 题目:将一个数组逆序输出 ___________________________________________________________________ 程序分析:用第一个与最后一个交换 ___________________________________________________________________ 程序源代码: #define N 5 main() { int a[N]={9,6,5,4,1},i,temp; printf("\n original array:\n"); for(i=0;i"); scanf("%d",&num); printf("\40:The square for this number is %d \n",SQ(num)); if(num>=50) again=TRUE; else again=FALSE; } } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:16:18 题目:宏#define命令练习(2) ___________________________________________________________________ 程序源代码: #include "stdio.h" #define exchange(a,b) { \ /*宏定义中允许包含两道衣裳命令的情形 此时必须在最右边加上"\"*/ int t;\ t=a;\ a=b;\ b=t;\ } void main(void) { int x=10; int y=20; printf("x=%d; y=%d\n",x,y); exchange(x,y); printf("x=%d; y=%d\n",x,y); } 题目:宏#define命令练习(3) ___________________________________________________________________ 程序源代码: #define LAG > #define SMA < #define EQ == #include "stdio.h" void main() { int i=10; int j=20; if(i LAG j) printf("\40: %d larger than %d \n",i,j); else if(i EQ j) printf("\40: %d equal to %d \n",i,j); else if(i SMA j) printf("\40:%d smaller than %d \n",i,j); else printf("\40: No such value.\n"); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:16:49 题目:#if #ifdef和#ifndef的综合应用 ___________________________________________________________________ 程序源代码: #include "stdio.h" #define MAX #define MAXIMUM(x,y) (x>y)?x:y #define MINIMUM(x,y) (x>y)?y:x void main() { int a=10,b=20; #ifdef MAX printf("\40: The larger one is %d\n",MAXIMUM(a,b)); #else printf("\40: The lower one is %d\n",MINIMUM(a,b)); #endif #ifndef MIN printf("\40: The lower one is %d\n",MINIMUM(a,b)); #else printf("\40: The larger one is %d\n",MAXIMUM(a,b)); #endif #undef MAX #ifdef MAX printf("\40: The larger one is %d\n",MAXIMUM(a,b)); #else printf("\40: The lower one is %d\n",MINIMUM(a,b)); #endif #define MIN #ifndef MIN printf("\40: The lower one is %d\n",MINIMUM(a,b)); #else printf("\40: The larger one is %d\n",MAXIMUM(a,b)); #endif } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:17:11 题目:#include 的应用练习 ___________________________________________________________________ 程序源代码: test.h 文件如下: #define LAG > #define SMA < #define EQ == #include "test.h" /*一个新文件50.c 包含test.h*/ #include "stdio.h" void main() { int i=10; int j=20; if(i LAG j) printf("\4‎‎0: %d larger than %d \n",i,j); else if(i EQ j) printf("\40: %d equal to %d \n",i,j); else if(i SMA j) printf("\40:%d smaller than %d \n",i,j); else printf("\40: No such value.\n"); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:18:56 题目:学习使用按位与& ___________________________________________________________________ 程序分析:0&0=0; 0&1=0; 1&0=0; 1&1=1 ___________________________________________________________________ 程序源代码: #include "stdio.h" main() { int a,b; a=077; b=a&3; printf("\40: The a & b(decimal) is %d \n",b); b&=7; printf("\40: The a & b(decimal) is %d \n",b); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:19:16 | 题目:学习使用按位或 ___________________________________________________________________ 程序分析:0|0=0; 0|1=1; 1|0=1; 1|1=1 ___________________________________________________________________ 程序源代码: #include "stdio.h" main() { int a,b; a=077; b=a|3; printf("\40: The a & b(decimal) is %d \n",b); b|=7; printf("\40: The a & b(decimal) is %d \n",b); } 题目:学习使用按位异或^ _______________________________________________________________ ____ 程序分析:0^0=0; 0^1=1; 1^0=1; 1^1=0 ___________________________________________________________________ 程序源代码: #include "stdio.h" main() { int a,b; a=077; b=a^3; printf("\40: The a & b(decimal) is %d \n",b); b^=7; printf("\40: The a & b(decimal) is %d \n",b); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:20:02 题目:取一个整数a从右端开始的4,7位 ___________________________________________________________________ 程序分析:可以这样考虑: (1)先使a右移4位 (2)设置一个低4位全为1,其余全为0的数 可用~(~0<<4) (3)将上面二者进行&运算 ___________________________________________ 程序源代码: main() { unsigned a,b,c,d; scanf("%o",&a); b=a>>4; c=~(~0<<4); d=b&c; printf("%o\n%o\n",a,d); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:22:15 题目:学习使用按位取反~ ___________________________________________________________________ ~0=1; ~1=0; 程序分析: ___________________________________________________________________ 程序源代码: #include "stdio.h" main() { int a,b; a=234; b=~a; printf("\40: The a's 1 complement(decimal) is %d \n",b); a=~a; printf("\40: The a's 1 complement(hexidecimal) is %x \n",a); } 题目:画图 学用circle画圆形 ___________________________________________________________________ 程序源代码: /*circle*/ #include "graphics.h" main() { int driver,mode,i; float j=1,k=1; driver=VGA;mode=VGAHI; initgraph(&driver,&mode,""); setbkcolor(YELLOW); for(i=0;i<=25;i++) { setcolor(8); circle(310,250,k); k=k+j; j=j+0.3; } } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:23:35 题目:画图 学用line画直线 ___________________________________________________________________ 程序源代码: #include "graphics.h" main() { int driver,mode,i; float x0,y0,y1,x1; float j=12,k; driver=VGA;mode=VGAHI; initgraph(&driver,&mode,""); setbkcolor(GREEN); x0=263;y0=263;y1=275;x1=275; for(i=0;i<=18;i++) { setcolor(5); line(x0,y0,x0,y1); x0=x0-5; y0=y0-5; x1=x1+5; y1=y1+5; j=j+10; } x0=263;y1=275;y0=263; for(i=0;i<=20;i++) { setcolor(5); line(x0,y0,x0,y1); x0=x0+5; y0=y0+5; y1=y1-5; } } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:24:13 题目:画图 学用rectangle画方形 ___________________________________________________________________ 程序分析:利用for循环控制100-999个数 每个数分解出个位 十位 百位 ___________________________________________________________________ 程序源代码: #include "graphics.h" main() { int x0,y0,y1,x1,driver,mode,i; driver=VGA;mode=VGAHI; initgraph(&driver,&mode,""); setbkcolor(YELLOW); x0=263;y0=263;y1=275;x1=275; for(i=0;i<=18;i++) { setcolor(1); rectangle(x0,y0,x1,y1); x0=x0-5; y0=y0-5; x1=x1+5; y1=y1+5; } settextstyle(DEFAULT_FONT,HORIZ_DIR,2); outtextxy(150,40,"How beautiful it is!"); line(130,60,480,60); setcolor(2); circle(269,269,137); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:24:45 题目:画图 综合例子 ___________________________________________________________________ 程序源代码: # define PAI 3.1415926 # define B 0.809 # include "graphics.h" #include "math.h" main() { int i,j,k,x0,y0,x,y,driver,mode; float a; driver=CGA;mode=CGAC0; initgraph(&driver,&mode,""); setcolor(3); setbkcolor(GREEN); x0=150;y0=100; circle(x0,y0,10); circle(x0,y0,20); circle(x0,y0,50); for(i=0;i<16;i++) { a=(2*PAI/16)*i; x=ceil(x0+48*cos(a)); y=ceil(y0+48*sin(a)*B); setcolor(2); line(x0,y0,x,y);} setcolor(3);circle(x0,y0,60); /* Make 0 time normal size letters */ settextstyle(DEFAULT_FONT,HORIZ_DIR,0); a key"); outtextxy(10,170,"press getch(); setfillstyle(HATCH_FILL,YELLOW); floodfill(202,100,WHITE); getch(); for(k=0;k<=500;k++) { setcolor(3); for(i=0;i<=16;i++) { a=(2*PAI/16)*i+(2*PAI/180)*k; x=ceil(x0+48*cos(a)); y=ceil(y0+48+sin(a)*B); setcolor(2); line(x0,y0,x,y); } for(j=1;j<=50;j++) { a=(2*PAI/16)*i+(2*PAI/180)*k-1; x=ceil(x0+48*cos(a)); y=ceil(y0+48*sin(a)*B); line(x0,y0,x,y); } } restorecrtmode(); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:25:41 题目:画图 综合例子 ___________________________________________________________________ 程序源代码: #include "graphics.h" #define LEFT 0 #define TOP 0 #define RIGHT 639 #define BOTTOM 479 #define LINES 400 #define MAXCOLOR 15 main() { int driver,mode,error; int x1,y1; int x2,y2; int dx1,dy1,dx2,dy2,i=1; int count=0; int color=0; driver=VGA; mode=VGAHI; initgraph(&driver,&mode,""); x1=x2=y1=y2=10; dx1=dy1=2; dx2=dy2=3; while(!kbhit()) { line(x1,y1,x2,y2); x1+=dx1;y1+=dy1; x2+=dx2;y2+dy2; if(x1<=LEFT||x1>=RIGHT) dx1=-dx1; if(y1<=TOP||y1>=BOTTOM) dy1=-dy1; if(x2<=LEFT||x2>=RIGHT) dx2=-dx2; if(y2<=TOP||y2>=BOTTOM) dy2=-dy2; if(++count>LINES) { setcolor(color); color=(color>=MAXCOLOR)?0:++color; } } closegraph(); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:27:16 题目:打印出杨辉三角形(要求打印出10行如下图) ___________________________________________________________________ 程序分析: 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 ___________________________________________________________________ 程序源代码: main() {int i,j; int a[10][10]; printf("\n"); for(i=0;i<10;i++) {a[i][0]=1; a[i][i]=1;} for(i=2;i<10;i++) for(j=1;jn2) swap(pointer1,pointer2); if(n1>n3) swap(pointer1,pointer3); if(n2>n3) swap(pointer2,pointer3); printf("the sorted numbers are:%d,%d,%d\n",n1,n2,n3); } swap(p1,p2) int *p1,*p2; {int p; p=*p1;*p1=*p2;*p2=p; } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:29:37 题目:输入数组 最大的与第一个元素交换 最小的与最后一个元素交换 输出数组 ___________________________________________________________________ 程序分析:谭浩强的有问题 ___________________________________________________________________ 程序源代码: main() { int number[10]; input(number); max_min(number); output(number); } input(number) int number[10]; {int i; for(i=0;i<9;i++) scanf("%d,",&number[i]); scanf("%d",&number[9]); } max_min(array) int array[10]; {int *max,*min,k,l; int *p,*arr_end; arr_end=array+10; max=min=array; for(p=array+1;p*max) max=p; else if(*p<*min) min=p; k=*max; l=*min; *p=array[0];array[0]=l;l=*p; *p=array[9];array[9]=k;k=*p; return; } output(array) int array[10]; { int *p; for(p=array;parray;p--) *p=*(p-1); *array=array_end; m--; if(m>0) move(array,n,m); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:30:30 题目:有n个人围成一圈 顺序排号 从第一个人开始报数(从1到3报数) 凡报到3的人退出圈子 问最后留下的是原来 ___________________________________________________________________ 程序分析: ___________________________________________________________________ 程序源代码: #define nmax 50 main() { int i,k,m,n,num[nmax],*p; printf("please input the total of numbers:"); scanf("%d",&n); p=num; for(i=0;i记录
___________________________________________________________________ 程序源代码: #define N 5 struct student { char num[6]; char name[8]; int score[4]; } stu[N]; input(stu) struct student stu[]; { int i,j; for(i=0;i\n"); for(i=0;i<=4;i++) { scanf("%d",&num); ptr->data=num; ptr->next=(link)malloc(sizeof(node)); if(i==4) ptr->next=NULL; else ptr=ptr->next; } ptr=head; while(ptr!=NULL) { printf("The value is ==>%d\n",ptr->data); ptr=ptr->next; } } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:34:12 题目:反向输出一个链表 ___________________________________________________________________ 程序源代码: /*reverse output a list*/ #include "stdlib.h" #include "stdio.h" struct list { int data; struct list *next; }; typedef struct list node; typedef node *link; void main() { link ptr,head,tail; int num,i; tail=(link)malloc(sizeof(node)); tail->next=NULL; ptr=tail; printf("\nplease input 5 data==>\n"; for(i=0;i<=4;i++) { scanf("%d",&num); ptr->data=num; head=(link)malloc(sizeof(node)); head->next=ptr; ptr=head; } ptr=ptr->next; while(ptr!=NULL) { printf("The value is ==>%d\n",ptr->data); ptr=ptr->next; }} 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:34:32 题目:连接两个链表 ___________________________________________________________________ 程序源代码: #include "stdlib.h" #include "stdio.h" struct list { int data; struct list *next; }; typedef struct list node; typedef node *link; link delete_node(link pointer,link tmp) {if (tmp==NULL) /*delete first node*/ return poi‎‎nter->next; else { if(tmp->next->next==NULL)/*delete last node*/ tmp->next=NULL; else /*delete the other node*/ tmp->next=tmp->next->next; return pointer; } } void selection_sort(link pointer,int num) { link tmp,btmp; int i,min; for(i=0;idata; btmp=NULL; while(tmp->next) { if(min>tmp->next->data) {min=tmp->next->data; btmp=tmp; } tmp=tmp->next; } printf("\40: %d\n",min); pointer=delete_node(pointer,btmp); } } link create_list(int array[],int num) { link tmp1,tmp2,pointer; int i; pointer=(link)malloc(sizeof(node)); pointer->data=array[0]; tmp1=pointer; for(i=1;inext=NULL; tmp2->data=array[i]; tmp1->next=tmp2; tmp1=tmp1->next; } return pointer; } link concatenate(link pointer1,link pointer2) { link tmp; tmp=pointer1; while(tmp->next) tmp=tmp->next; tmp->next=pointer2; return pointer1; } void main(void) { int arr1[]={3,12,8,9,11}; link ptr; ptr=create_list(arr1,5); selection_sort(ptr,5); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:34:53 题目:放松一下 算一道简单的题目 ___________________________________________________________________ 程序源代码: main() { int i,n; for(i=1;i<5;i++) { n=0; if(i!=1) n=n+1; if(i==3) n=n+1; if(i==4) n=n+1; if(i!=4) n=n+1; if(n==3) printf("zhu hao shi de shi:%c",64+i); } } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:35:13 题目:编写一个函数 输入n为偶数时 调用函数求1/2+1/4+...+1/n,当输入n为奇数时 调用函数1/1+1/3+...+1/n( ___________________________________________________________________ 程序源代码: main() #include "stdio.h" main() { float peven(),podd(),dcall(); float sum; int n; while (1) { scanf("%d",&n); if(n>1) break; } if(n%2==0) { printf("Even="); sum=dcall(peven,n); } else { printf("Odd="); sum=dcall(podd,n); } printf("%f",sum); } float peven(int n) { float s; int i; s=1; for(i=2;i<=n;i+=2) s+=1/(float)i; return(s); } float podd(n) int n; { float s; int i; s=0; for(i=1;i<=n;i+=2) s+=1/(float)i; return(s); } float dcall(fp,n) float (*fp)(); int n; { float s; s=(*fp)(n); return(s); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:35:30 题目:填空练习(指向指针的指针) ___________________________________________________________________ 程序源代码: main() { char *s[]={"man","woman","girl","boy","sister"}; char **q; int k; for(k=0;k<5;k++) { ;/*这里填写什么语句*/ printf("%s\n",*q); } } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:35:47 题目:找到年龄最大的人 并输出 请找出程序中有什么问题 ___________________________________________________________________ 程序源代码: #define N 4 #include "stdio.h" static struct man { char name[20]; int age; } person[N]={"li",18,"wang",19,"zhang",20,"sun",22}; main() {struct man *q,*p; int i,m=0; p=person; for (i=0;iage) q=p++; m=q->age;} printf("%s,%d",(*q).name,(*q).age); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:36:05 题目:字符串排序 ___________________________________________________________________ 程序源代码: main() { char *str1[20],*str2[20],*str3[20]; char swap(); printf("please input three strings\n"); scanf("%s",str1); scanf("%s",str2); scanf("%s",str3); if(strcmp(str1,str2)>0) swap(str1,str2); if(strcmp(str1,str3)>0) swap(str1,str3); if(strcmp(str2,str3)>0) swap(str2,str3); printf("after being sorted\n"); printf("%s\n%s\n%s\n",str1,str2,str3); } char swap(p1,p2) char *p1,*p2; { char *p[20]; strcpy(p,p1);strcpy(p1,p2);strcpy(p2,p); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:36:22 题目:海滩上有一堆桃子 五只猴子来分 第一只猴子把这堆桃子凭据分为五份 多了一个 这只猴子把多的一个扔入海中 只猴子把剩下的桃子又平均分成五份 又多了一个 它同样把多的一个扔入海中 拿走了一份 第三、第四、第五只猴子都是 上原来最少有多少个桃子, ___________________________________________________________________ 程序源代码: main() {int i,m,j,k,count; for(i=4;i<10000;i+=4) { count=0; m=i; for(k=0;k<5;k++) { j=i/4*5+1; i=j; if(j%4==0) count++; else break; } i=m; if(count==4) {printf("%d\n",count); break;} } } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:38:01 题目:809*??=800*??+9*??+1 其中??代表的两位数,8*??的结果为两位数 9*??的结果为3位数 求??代表的两位数 果 ___________________________________________________________________ 程序源代码: output(long b,long i) { printf("\n%ld/%ld=809*%ld+%ld",b,i,i,b%i); } main() {long int a,b,i; a=809; for(i=10;i<100;i++) {b=i*a+1; if(b>=1000&&b<=10000&&8*i<100&&9*i>=100) output(b,i); } } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:38:13 题目:八进制转换为十进制 ___________________________________________________________________ 程序源代码: main() { char *p,s[6];int n; p=s; gets(p); n=0; while(*(p)!='\0') {n=n*8+*p-'0'; p++;} printf("%d",n); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:38:29 题目:求0?7所能组成的奇数个数 ___________________________________________________________________ 程序源代码: main() { long sum=4,s=4; int j; for(j=2;j<=8;j++)/*j is place of number*/ { printf("\n%ld",sum); if(j<=2) s*=7; else s*=8; sum+=s;} printf("\nsum=%ld",sum); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:38:44 题目:一个偶数总能表示为两个素数之和 ___________________________________________________________________ 程序源代码: #include "stdio.h" #include "math.h" main() { int a,b,c,d; scanf("%d",&a); for(b=3;b<=a/2;b+=2) { for(c=2;c<=sqrt(b);c++) if(b%c==0) break; if(c>sqrt(b)) d=a-b; else break; for(c=2;c<=sqrt(d);c++) if(d%c==0) break; if(c>sqrt(d)) printf("%d=%d+%d\n",a,b,d); } } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:39:01 题目:判断一个素数能被几个9整除 ___________________________________________________________________ 程序源代码: main() { long int m9=9,sum=9; int zi,n1=1,c9=1; scanf("%d",&zi); while(n1!=0) { if(!(sum%zi)) n1=0; else {m9=m9*10; sum=sum+m9; c9++; } } printf("%ld,can be divided by %d \"9\"",sum,c9); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:39:21 题目:两个字符串连接程序 ___________________________________________________________________ 程序源代码: #include "stdio.h" main() {char a[]="acegikm"; char b[]="bdfhjlnpq"; char c[80],*p; int i=0,j=0,k=0; while(a!='\0'&&b[j]!='\0') {if (a { c[k]=a;i++;} else c[k]=b[j++]; k++; } c[k]='\0'; if(a=='\0') p=b+j; else p=a+i; strcat(c,p); puts(c); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:39:36 题目:回答结果(结构体变量传递) ___________________________________________________________________ 程序源代码: #include "stdio.h" struct student { int x; char c; } a; main() {a.x=3; a.c='a'; f(a); printf("%d,%c",a.x,a.c); } f(struct student b) { b.x=20; b.c='y'; } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:39:50 题目:读取7个数(1?50)的整数值 每读取一个值 程序打印出该值个数的, ___________________________________________________________________ 程序源代码: main() {int i,a,n=1; while(n<=7) { do { scanf("%d",&a); }while(a<1||a>50); for(i=1;i<=a;i++) printf("*"); printf("\n"); n++;} getch(); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:40:07 题目:某个公司采用公用电话传递数据 数据是四位的整数 在传递过程中是加密的 加密规则如下:‎‎每位数字都加上5,然后用和除以 数代替该数字 再将第一位和第四位交换 第二位和第三位交换 ___________________________________________________________________ 程序源代码: main() {int a,i,aa[4],t; scanf("%d",&a); aa[0]=a%10; aa[1]=a%100/10; aa[2]=a%1000/100; aa[3]=a/1000; for(i=0;i<=3;i++) {aa[i]+=5; aa[i]%=10; } for(i=0;i<=3/2;i++) {t=aa[i]; aa[i]=aa[3-i]; aa[3-i]=t; } for(i=3;i>=0;i--) printf("%d",aa[i]); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:40:21 题目:专升本一题 读结果 ___________________________________________________________________ 程序源代码: #include "stdio.h" #define M 5 main() {int a[M]={1,2,3,4,5}; int i,j,t; i=0;j=M-1; while(i {t=*(a+i); *(a+i)=*(a+j); *(a+j)=t; ; i++;j-- } for(i=0;i printf("%d",*(a+i)); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:41:27 题目:时间函数举例1 ___________________________________________________________________ 程序源代码: #include "stdio.h" #include "time.h" void main() { time_t lt; /*define a longint time varible*/ lt=time(NULL);/*system time and date*/ printf(ctime(<)); /*english format output*/ printf(asctime(localtime(<)));/*tranfer to tm*/ printf(asctime(gmtime(<))); /*tranfer to Greenwich time*/ } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:43:47 题目:时间函数举例2 ___________________________________________________________________ 程序源代码: /*calculate time*/ #include "time.h" #include "stdio.h" main() { time_t start,end; int i; start=time(NULL); for(i=0;i<3000;i++) { printf("\1\1\1\1\1\1\1\1\1\1\n");} end=time(NULL); printf("\1: The different is %6.3f\n",difftime(end,start)); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:44:09 题目:时间函数举例3 ___________________________________________________________________ 程序源代码: /*calculate time*/ #include "time.h" #include "stdio.h" main() { clock_t start,end; int i; double var; start=clock(); for(i=0;i<10000;i++) { printf("\1\1\1\1\1\1\1\1\1\1\n");} end=clock(); printf("\1: The different is %6.3f\n",(double)(end-start)); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:44:27 题目:时间函数举例4(一个猜数游戏 判断一个人反应快慢) ___________________________________________________________________ 程序源代码: #include "time.h" #include "stdlib.h" #include "stdio.h" main() {char c; clock_t start,end; time_t a,b; double var; int i,guess; srand(time(NULL)); printf("do you want to play it.('y' or 'n') \n"); loop: while((c=getchar())=='y') { i=rand()%100; printf("\nplease input number you guess:\n"); start=clock(); a=time(NULL); scanf("%d",&guess); while(guess!=i) {if(guess>i) {printf("please input a little smaller.\n"); scanf("%d",&guess);} else {printf("please input a little bigger.\n"); scanf("%d",&guess);} } end=clock(); b=time(NULL); printf("\1: It took you %6.3f seconds\n",var=(double)(end-start)/18.2); printf("\1: it took you %6.3f seconds\n\n",difftime(b,a)); if(var<15) printf("\1\1 You are very clever! \1\1\n\n"); else if(var<25) printf("\1\1 you are normal! \1\1\n\n"); else printf("\1\1 you are stupid! \1\1\n\n"); printf("\1\1 Congradulations \1\1\n\n"); printf("The number you guess is %d",i); } printf("\ndo you want to try it again?(\"yy\".or.\"n\")\n"); if((c=getch())=='y') goto loop; } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:44:52 题目:家庭财务管理小程序 ___________________________________________________________________ 程序源代码: /*money management system*/ #include "stdio.h" #include "dos.h" main() { FILE *fp; struct date d; float sum,chm=0.0; int len,i,j=0; int c; char ch[4]="",ch1[16]="",chtime[12]="",chshop[16],chmoney[8]; pp: clrscr(); sum=0.0; gotoxy(1,1);printf("|---------------------------------------------------------------------------|"); gotoxy(1,2);printf("| money management system(C1.0) 2000.03 |"); gotoxy(1,3);printf("|---------------------------------------------------------------------------|"); gotoxy(1,4);printf("| -- money records -- | -- today cost list -- |"); gotoxy(1,5);printf("| ------------------------ |-------------------------------------|"); gotoxy(1,6);printf("| date: -------------- | |"); gotoxy(1,7);printf("| | | | |"); gotoxy(1,8);printf("| -------------- | |"); gotoxy(1,9);printf("| thgs: ------------------ | |"); gotoxy(1,10);printf("| | | | |"); gotoxy(1,11);printf("| ------------------ | |"); gotoxy(1,12);printf("| cost: ---------- | |"); gotoxy(1,13);printf("| | | | |"); gotoxy(1,14);printf("| ---------- | |"); gotoxy(1,15);printf("| | |"); gotoxy(1,16);printf("| | |"); gotoxy(1,17);printf("| | |"); gotoxy(1,18);printf("| | |"); gotoxy(1,19);printf("| | |"); gotoxy(1,20);printf("| | |"); gotoxy(1,21);printf("| | |"); gotoxy(1,22);printf("| | |"); gotoxy(1,23);printf("|---------------------------------------------------------------------------|"); i=0; getdate(&d); sprintf(chtime,"%4d.%02d.%02d",d.da_year,d.da_mon,d.da_day); for(;;) { gotoxy(3,24);printf(" Tab __browse cost list Esc __quit"); gotoxy(13,10);printf(" "); gotoxy(13,13);printf(" "); gotoxy(13,7);printf("%s",chtime); j=18; ch[0]=getch(); if(ch[0]==27) break; strcpy(chshop,""); strcpy(chmoney,""); if(ch[0]==9) { mm:i=0; fp=fopen("home.dat","r+"); gotoxy(3,24);printf(" "); gotoxy(6,4);printf(" list records "); gotoxy(1,5);printf("|-------------------------------------|"); gotoxy(41,4);printf(" "); gotoxy(41,5);printf(" |"); while(fscanf(fp,"%10s%14s%f\n",chtime,chshop,&chm)!=EOF) { if(i==36) { getch(); i=0;} if ((i%36)<17) { gotoxy(4,6+i); printf(" "); gotoxy(4,6+i);} else if((i%36)>16) { gotoxy(41,4+i-17); printf(" "); gotoxy(42,4+i-17);} i++; sum=sum+chm; printf("%10s %-14s %6.1f\n",chtime,chshop,chm);} gotoxy(1,23);printf("|---------------------------------------------------------------------------|"); gotoxy(1,24);printf("| |"); -------------|"); gotoxy(1,25);printf("|-------------------------------------------------------------- gotoxy(10,24);printf("total is %8.1f$",sum); fclose(fp); gotoxy(49,24);printf("press any key to.....");getch();goto pp; } else { while(ch[0]!='\r') { if(j<10) { strncat(chtime,ch,1); j++;} if(ch[0]==8) { len=strlen(chtime)-1; if(j>15) { len=len+1; j=11;} strcpy(ch1,""); j=j-2; strncat(ch1,chtime,len); strcpy(chtime,""); strncat(chtime,ch1,len-1); gotoxy(13,7);printf(" ");} gotoxy(13,7);printf("%s",chtime);ch[0]=getch(); if(ch[0]==9) goto mm; if(ch[0]==27) exit(1); } gotoxy(3,24);printf(" "); gotoxy(13,10); j=0; ch[0]=getch(); while(ch[0]!='\r') { if (j<14) { strncat(chshop,ch,1); j++;} if(ch[0]==8) { len=strlen(chshop)-1; strcpy(ch1,""); j=j-2; strncat(ch1,chshop,len); strcpy(chshop,""); strncat(chshop,ch1,len-1); gotoxy(13,10);printf(" ");} gotoxy(13,10);printf("%s",chshop);ch[0]=getch();} gotoxy(13,13); j=0; ch[0]=getch(); while(ch[0]!='\r') { if (j<6) { strncat(chmoney,ch,1); j++;} if(ch[0]==8) { len=strlen(chmoney)-1; strcpy(ch1,""); j=j-2; strncat(ch1,chmoney,len); strcpy(chmoney,""); strncat(chmoney,ch1,len-1); gotoxy(13,13);printf(" ");} gotoxy(13,13);printf("%s",chmoney);ch[0]=getch();} if((strlen(chshop)==0)||(strlen(chmoney)==0)) continue; if((fp=fopen("home.dat","a+"))!=NULL); fprintf(fp,"%10s%14s%6s",chtime,chshop,chmoney); fputc('\n',fp); fclose(fp); i++; gotoxy(41,5+i); printf("%10s %-14s %-6s",chtime,chshop,chmoney); }}} 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:45:21 题目:计算字符串中子串出现的次数 ___________________________________________________________________ 程序源代码: #include "string.h" #include "stdio.h" main() { char str1[20],str2[20],*p1,*p2; int sum=0; printf("please input two strings\n"); scanf("%s%s",str1,str2); p1=str1;p2=str2; while(*p1!='\0') { if(*p1==*p2) {while(*p1==*p2&&*p2!='\0') {p1++; p2++;} } else p1++; if(*p2=='\0') sum++; p2=str2; } printf("%d",sum); getch(); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:45:38 题目:从键盘输入一些字符 逐个把它们送到磁盘上去 直到输入一个#为止 ___________________________________________________________________ 程序源代码: #include "stdio.h" main() { FILE *fp; char ch,filename[10]; scanf("%s",filename); if((fp=fopen(filename,"w"))==NULL) {printf("cannot open file\n"); exit(0);} ch=getchar(); ch=getchar(); while(ch!='#') {fputc(ch,fp);putchar(ch); ch=getchar(); } fclose(fp); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:46:08 题目:从键盘输入一个字符串 将小写字母全部转换成大写字母 然后输出到一个磁盘文件?test?中保存 输入的字符串以 ___________________________________________________________________ 程序源代码: #include "stdio.h" main() {FILE *fp; char str[100],filename[10]; int i=0; if((fp=fopen("test","w")==NULL) { printf("cannot open the file\n"; exit(0);} printf("please input a string:\n"; gets(str); while(str!='!') { if(str>='a'&&str<='z') str=str-32; fputc(str,fp); i++;} fclose(fp); fp=fopen("test","r"; fgets(str,strlen(str)+1,fp); printf("%s\n",str); fclose(fp); } 回复人:GirlSpicy(辣妹子) 回复日期:2004-12-11 15:46:27 题目:有两个磁盘文件A和B,各存放一行字母 要求把这两个文件中的信息合并(按字母顺序排列) 输出到一个新文件C ___________________________________________________________________ 程序源代码: #include "stdio.h" main() { FILE *fp; int i,j,n,ni; char c[160],t,ch; if((fp=fopen("A","r"))==NULL) {printf("file A cannot be opened\n"); exit(0);} printf("\n A contents are :\n"); for(i=0;(ch=fgetc(fp))!=EOF;i++) {c[i]=ch; putchar(c[i]); } fclose(fp); ni=i; if((fp=fopen("B","r"))==NULL) {printf("file B cannot be opened\n"); exit(0);} printf("\n B contents are :\n"); for(i=0;(ch=fgetc(fp))!=EOF;i++) {c[i]=ch; putchar(c[i]); } fclose(fp); n=i; for(i=0;ic[j]) {t=c[i];c[i]=c[j];c[j]=t;} printf("\n C file is:\n"); fp=fopen("C","w"); for(i=0;i
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