A+B 4

Your task is to calculate a + b.

Input

Comprising a plurality of sets of input data. Each set of data includes an integer and a and b are on one line. Contains data indicates that the input end 00, and does not process the set of data. 
Output

For each group a and b, and outputs a and b in a row. Each input line to be output. 
Sample Input

1 5
10 20
0 0

Sample Output

6
30

#include<iostream>
using namespace std; int main() { int a,b,c; while(cin>>a>>b) { if(a+b!=0) cout<<a+b<<endl; } return 0; }

 

 Plus a determination is 0 if the input is not output together.