0_0_32747673_16897.cpp: In function 'int main()': 0_0_32747673_16897.cpp:5:16: error: 'a' was not declared in this scope while(cin >> a >> b) { ^ 0_0_32747673_16897.cpp:5:21: error: 'b' was not declared in this scope while(cin >> a >> b) { ^