C語言典型習(xí)題

1、C語言典型習(xí)題1、 累加求和l 1+2+3+100#include <stdio.h>main()int s,i;i=1;s=0;while(i<=100)s=s+i;i=i+1;printf("s=%dn",s);return 0;l 1+3+5+.99#include <stdio.h>main()int s,i;i=1;s=0;while(i<=99)s=s+i;i=i+2;printf("s=%dn",s);return 0;l 2+4+6+.100#include <stdio.h>main()i

2、nt s,i;i=2;s=0;while(i<=100)s=s+i;i=i+2;printf("s=%dn",s);return 0;2、 求階乘1*2*3.10的階乘#include <stdio.h>main()double i,p=1;for(i=1;i<=10;i+) p=p*i; printf("%fn",p);1*2*3.10階乘和#include <stdio.h>main()double i,p=1,s=0;for(i=1;i<=10;i+) p=p*i;s=s+p; printf("%

3、fn",s);遞歸法求n的階乘#include <stdio.h>int main()int fac(int n);int n,y;printf("請(qǐng)輸入要求階乘的數(shù):");scanf("%d",&n);y=fac(n);printf("%d!=%dn",n,y);return 0;int fac(int n)int f;if(n<0)printf("n<0,data error!");else if(n=0|n=1)f=1;else f=fac(n-1)*n;return

4、(f);3、求最大最小值，排序l 求三個(gè)數(shù)中最大值#include <stdio.h>int main()float a,b,c,t;scanf("%f,%f,%f",&a,&b,&c);if(a>b)t=a;a=b;b=t;if(a>c)t=a;a=c;c=t;if(b>c)t=b;b=c;c=t;printf("%fn",c);l 求三個(gè)數(shù)中最小值l 四個(gè)數(shù)中的最大值#include <stdio.h>int main()float a,b,c,d,t;scanf("%f,%

5、f,%f,%f",&a,&b,&c,&d);if(a<b)t=a;a=b;b=t;if(a<c)t=a;a=c;c=t;if(a<d)t=a;a=d;d=t;if(b<c)t=b;b=c;c=t;if(b<d)t=b;b=d;d=t;if(c<d)t=c;c=d;d=t;printf("%fn",a);return 0;l 四個(gè)數(shù)中的最小值l 三個(gè)數(shù)的排序（用IF語句）#include <stdio.h>int main()float a,b,c,t;scanf("%f,%f

6、,%f",&a,&b,&c);if(a>b)t=a;a=b;b=t;if(a>c)t=a;a=c;c=t;if(b>c)t=b;b=c;c=t;printf("%f,%f,%fn",a,b,c);return 0;l 10個(gè)數(shù)的排序（用循環(huán)及數(shù)組）#include <stdio.h>int main()int i,j,t;int a10=7,1,9,11,4,66,8,10,12,15;printf("原數(shù)據(jù)為:");for(i=0;i<10;i+)printf("%d,&q

7、uot;,ai);printf("n");for(i=0;i<9;i+)for(j=i+1;j<10;j+)if (ai<aj)t=ai;ai=aj;aj=t;printf("排序后");for(i=0;i<10;i+)printf("%d,",ai);printf("n");4、 閆年問題l 給出年份判斷是否是閆年#include <stdio.h>#include <math.h>int main() int y;scanf("%d",&

8、;y);if(y%4=0&&y%100!=0)|y%400=0)printf("閏年n");elseprintf("非閏年n");l 給出年份、月份判斷該月有多少天 #include <stdio.h>#include <math.h>int main()int m,y;scanf("%d,%d",&m,&y);switch(m)case 1 : case 3 : case 5 : case 7 : case 8 : case 10 : case 12 : printf(&quo

9、t;31n");break;case 4 : case 6 : case 9 : case 11 : printf("30n");break;case 2 :if(y%4=0&&y%100!=0)|y%400=0)printf("29n"); break;elseprintf("28n");break;default : printf("enter data error!n");5、 求素?cái)?shù)l 從鍵盤上輸入一個(gè)數(shù)，判斷其是否素?cái)?shù)#include <stdio.h>int mai

10、n() int n,i; printf("請(qǐng)輸入一個(gè)數(shù)"); scanf("%d",&n); for (i=2;i<=n-1;i+) if(n%i=0) break; if(i<n) printf("%d 不是素?cái)?shù)n",n); else printf("%d 是素?cái)?shù)",n); return 0;l 求100999之間的素?cái)?shù)#include <stdio.h>int main() int n,i; for(n=100;n<=999;n+) for(i=2;i<=n-1;i+

11、) if(n%i=0) break; if(i>=n)printf("%d ",n); return 0;6、 幾何圖形的輸出平行四邊形#include <stdio.h>int main()int i,j,k;for(i=1;i<9;i+)for(j=1;j<=9-i;j+) printf(" "); for(k=1;k<=10;k+) printf("*"); printf("n");直角三角形#include <stdio.h>int main()int i,j

12、;for(i=1;i<=9;i+)for(j=1;j<=i;j+)printf("*"); printf("n");等腰三角形#include <stdio.h>int main()int i,j,k;for(i=1;i<9;i+)for(j=1;j<=9-i;j+) printf(" "); for(k=1;k<=2*i-1;k+) printf("*"); printf("n");菱形#include <stdio.h>int main(

13、)int i,j,k;for(i=1;i<9;i+)for(j=1;j<=9-i;j+) printf(" "); for(k=1;k<=2*i-1;k+) printf("*"); printf("n");for(i=11;i<20;i+)for(k=1;k<=i-11;k+) printf(" ");for(j=1;j<2*(20-i);j+) printf("*"); printf("n");7、 產(chǎn)生并輸出10*10的矩陣，要求對(duì)角線上值為1，其余為0。#include <stdio.h>int main()int a1010,i,j;for(i=0;i<=9;i+)for(j=0;j<=9;j+)if (i=j | i+j=9)aij=1;elseaij=0; for(i=0;i<=9;i+) for(j=0;j<=9;j+) printf("%d ",aij); printf("n");8、 矩陣轉(zhuǎn)置 #include <stdio.h>int main()i