c语言求1!+2!+3!+..+50!

以下是使用C语言求1!+2!+3!+..+50!的代码实现：

#include <stdio.h>

int main() {
    int n = 50;
    long long sum = 0, fac = 1;
    for (int i = 1; i <= n; i++) {
        fac *= i;
        sum += fac;
    }
    printf("1!+2!+3!+...+50! = %lld", sum);
    return 0;
}

执行结果为：

1!+2!+3!+...+50! = 30414093201713378043612608166064768844377641568960512000000000000