阶乘，for循环得题，为什么whlie里面写不等于不对，写小于等于就对了呢😭

#include<stdio.h>
int main(){
int n;
scanf("%d",&n);
int i=1;
int factor=1;
while(i==!n){
factor=factor*i;
i++;
}
printf("%d",factor);
return 0;
}

while(i!=n){

//你的循环条件不对 把 i==!n 改为 i <= n

#include<stdio.h>
int main()
{
    int n;
    scanf("%d",&n);
    int i=1;
    int factor=1;
    while( i<=n )    //你的循环条件不对  把  i==!n  改为 i <= n
    {
        factor=factor*i;
        i++; 
    }
    printf("%d",factor);
    return 0;
}