Your task is to Calculate a + b.

The input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line. 

For each pair of input integers a and b you should output the sum of a and b.

Print a blank line between each case .

1 510 20

630

#include <iostream>  using namespace std;    int main()  {      int i,j;        while(cin >> i >> j)          cout << (i + j) << endl << endl;    return 0;  }