Question

c语言,求1!+2!+3!+4!+5!+....+n!

#include"stdio.h"
int main()
{
int i,n,sum;
printf("input a number:",n);
sum=0;
for(i=1;i<=n;i++)
sum+=i*i;
printf("sum=%d\n",sum);
return 0;
}
求修改!!

Answer 1

int sum = 0 , temp = 1;
for(int i =1; i<=n; ++i) {
temp* = i;
sum+ = temp;
}
printf("%d\n",sum);

Answer 2

sum=0;
for(i=1;i<=n){
sum+=i*i;
i++;
}