0_0_35944881_6595.cpp: In function 'int main()': 0_0_35944881_6595.cpp:7:1: error: 'cout' was not declared in this scope cout<<a+b<<endl; ^ 0_0_35944881_6595.cpp:7:12: error: 'endl' was not declared in this scope cout<<a+b<<endl; ^