本帖最后由 sujx 于 2015-8-31 01:08 编辑
1、求1~100所有偶数之和[mw_shl_code=c,true]#include <stdio.h>
#include <stdlib.h>
int main()
{
int a,i;
a=0;
i=2;
while(i<=100)
{
a=a+i;
i=i+2;
}
printf("%d\n",a);
system("pause");
return 0;
}[/mw_shl_code]
2、输入一个整数n(1<=n<=9),求n的阶乘(未对n的大小做判断)
[mw_shl_code=c,true]#include <stdio.h>
#include <stdlib.h>
int main()
{
int n,i;
i=n;
printf("Plese input a number (1<=n<=9): \n");
scanf("%d",&n);
if(n>=1&&n<=9)
{
n=n*i;
i--;
}
printf("The factorial is %d !\n",n);
system("pause");
return 0;
}[/mw_shl_code]
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