c语言中用for求阶乘怎么求啊/？

为什么我跑出来的是这样的啊
c语言中用for求阶乘怎么求啊/？
c语言中用for求阶乘怎么求啊/？

#include "stdio.h"
int main()
{
    int n = 0;
    int result = 1;
    scanf("%d", &n);
    for (int i = 1; i <= n; i++)
    {
        result = i * result;
    }
    printf("%d", result);
}

scanf("%d", &n);
int fact = 1;

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

for (int i = 1; i<= n; i++) {
fact *= i;
}

#include<stdio.h>
int main(){
scanf("%d", &n);
int fact = 1;

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

for (int i = 1; i<= n; i++) {
fact *= i;
}
printf("%d",fact);l
return 0;
}