c语言练习26——用递归法求n!

#include<stdio.h>
#include<stdlib.h>
//题目:用递归法求n的阶乘
int main(){
int n;
long int s,a;
while(1){
printf("请输入参数n:");
scanf("%d",&n);
    s=1;
    for(a=1;a<=n;a++)
    s=s*a;
printf("%d!=%ld
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",n,s);
}
return 0;
}