计算1!+2!+3!+4!+5!+6!+7!+8!+9!+10!

代码示例：

#include <stdio.h>
int main()
{int i = 0;int n = 0;int ret = 1;int sum = 0;for (n = 1; n <= 10; n++){ret = 1;for (i = 1; i <= n; i++){ret = ret * i;}sum = sum + ret;}printf("%d\n", sum);return 0;
}

运行结果：

4037913