0_0_39634183_2528.cpp: In function 'int main()': 0_0_39634183_2528.cpp:6:21: error: 'a' was not declared in this scope 6 | while(cin >>a >>b) | ^ 0_0_39634183_2528.cpp:6:25: error: 'b' was not declared in this scope 6 | while(cin >>a >>b) | ^