题解 | #小乐乐计算求和#
小乐乐计算求和
https://www.nowcoder.com/practice/c98aeab2362c459dbc840d4c75f07729
#include <stdio.h>
int main()
{
int sum = 0;
int i = 0;
int j = 1;
int n = 0;
scanf("%d", &n);
for (i = 1; i <= n; i++)
{
j = j*i;
sum += j;
}
printf("%d", sum);
return 0;
}