0_0_30436805_31773.cpp: In function 'int main()': 0_0_30436805_31773.cpp:5:13: error: 'a' was not declared in this scope while(cin>>a>>b){ ^ 0_0_30436805_31773.cpp:5:16: error: 'b' was not declared in this scope while(cin>>a>>b){ ^