Question

阶乘如何用c语言实现？

Answer 1

用for循环，可以实现 。

Answer 2

#include<stdio.h>
void main()
{
int n,fact=1,i;
scanf("%d",&n);
for(i=1;i<=n;i++)
fact*=i;
printf("fact=%d\n",fact);
}

Answer 3

# include <stdio.h>
long int fac(int n)
{ if(n==1) return 1;
else return n*fac(n-1);

}
void main()
{
int n;
long int s;
printf("Enter n：");
scanf("%d",&n);
s=fac(n);
printf("n!=%d",s);
}

Answer 4

#include "stdio.h"
main()
{
int n,s=1;
for(n=1;n<=4;n++)
{
s=s*n;
}
printf("%d",s);
return 0;
}

1*2*3*4=24

Answer 5

int n,i=1;
int result=1;
while(i<=n)
{
result=result*i;
i++;
}