6.16.18

// 6.16.18
#include <stdio.h>
int main(void)
{
    int sum = 5, week = 1;

    for (week = 1, sum = 5;sum <= 150;week++)
    {
        sum = (sum - week) * 2;
        printf("第%d周是 %d人\n", week, sum);
    }
}