Main.cc: In function 'int main()':
Main.cc:5:5: error: 'cin' was not declared in this scope
cin>>a>>b;
^
Main.cc:7:21: error: 'strcmp' was not declared in this scope
max = strcmp(a,b);
^
Main.cc:8:5: error: 'cout' was not declared in this scope
cout<<"max="<