View Code of Problem 1

#include <iostream>
using namespace std;

int main()
{
    cin >> a >> b;
    cout << a+b << endl;
}
/*
Main.cc: In function 'int main()':
Main.cc:6:12: error: 'a' was not declared in this scope
     cin >> a >> b;
            ^
Main.cc:6:17: error: 'b' was not declared in this scope
     cin >> a >> b;
                 ^
*/