第二期训练题
题目描述:
Hey, welcome to HDOJ(Hangzhou Dianzi University Online Judge).
In this problem, your task is to calculate SUM(n) = 1 + 2 + 3 + … + n.
题意分析:
emmm,说实在话,这道题由于英文水平严重不足,导致wa了无数次,最后去discuss那才知道sum后面要有两个换行符才行的。。
#include<cstdio>
using namespace std;
int main()
{
int i, n, sum;
while (scanf_s("%d", &n) != EOF)
{
sum = 0;
for (i = 1; i <= n; i++)
{
sum += i;
}
printf("%d\n\n", sum);
}
return 0;
}