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  • hdu 1001

    Sum Problem

    Time Limit: 1000/500 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
    Total Submission(s): 342001    Accepted Submission(s): 86236


    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
     题意:求1到n的和
    #include<iostream>
    using namespace std;
    int main(){
        int a,b,c;
        while(cin>>a){
            c=0;
            for(b=1;b<=a;b++)
                c+=b;
            cout<<c<<endl<<endl;
        }
        return 0;
    }
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  • 原文地址:https://www.cnblogs.com/wabi87547568/p/4687730.html
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