Problem Description
Hey, welcome to HDOJ(Hangzhou Dianzi University Online Judge).
In this problem, your task is to calculate SUM(n) = 1 + 2 + 3 + … + n.Input
The input will consist of a series of integers n, one integer per line.Output
For each case, output SUM(n) in one line, followed by a blank line. You may assume the result will be in the range of 32-bit signed integer.Sample Input
1
100Sample Output
15050
水题
#include<stdio.h>
int main(){
int n;
while(scanf("%d",&n)!=EOF){
int sum=0,i;
for(i=1;i<=n;i++){
sum+=i;
}
printf("%d\n\n",sum);
}
return 0;
}
本文介绍了一个简单的编程问题:如何使用C语言实现求和计算。该问题是HDOJ(杭州电子科技大学在线评测系统)中的一项练习,目的是帮助初学者熟悉循环结构和基本的输入输出操作。
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