c语言代码解决问题

解题思路:

注意事项:

参考代码:

#include<stdio.h>

int main()

{

    int n, sum = 0, day_earn = 1,i;

    scanf("%d", &n);

    while (n > 0)

    {

        for (i = 1; i <= day_earn; i++)

        {

            sum += day_earn;

            n--;

            if (n == 0)

                break;

        }

        day_earn++;

    }

    printf("%d", sum);

    return 0;

}