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hdu1001

发布时间:2022-07-27 13:56:09

Sum Problem

Time Limit: 1000/500 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 194488    Accepted Submission(s): 46632 hdu1001
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 1 100   Sample Output 1 5050   Author DOOM III        
  1. #include<iostream>
  2. using namespace std;
  3. int main()
  4. {
  5.     int n,sum,i;
  6.     while(cin>>n)
  7.     {
  8.         sum=0;
  9.             for(i=1;i<=n;i++)
  10.             sum+=i;
  11.         cout<<sum<<endl<<endl;
  12.     }
  13.     return 0;
  14. }
 

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