一些例题....

输出文字:

#include<stdio.h>

main()

{

printf("你好,世界!!!\n");

return 0;

}

两个数之和:

#include<stdio.h>

main()

{int a,b,sum;

a=123;

b=456;

printf("%d\n",sum=a+b);

return 0;

}

两个数求最大值:

#include<stdio.h>

int max(int x,int y)

{return (x>y?x:y);}

main()

{int a,b;

scanf("%d,%d",&a,&b);

printf("%d",max(a,b));

return 0;

}

求1*2*3*4*5:

#include<stdio.h>

main()

{int i,t;

t=1;

i=2;

while(i<=2)

{t=t*i;

 i=i+1;}

printf("%d",t);

return 0;

}

求1-1/2+1/3-1/4+1/5-1/6....+1/99-1/100的和

#include<stdio.h>

main()

{int sign=1;

double deno=2.0,sum=1.0,term;

while(deno<=100)

{sign=-sign;

term=sign/deno;

sum=sum+term;

deno=deno+1;}

printf("%f\n",sum);

return 0;}