Main.cc: In function ‘int main()’:
Main.cc:9:5: error: ‘cin’ was not declared in this scope
cin>>a>>b>>x>>y;
^~~
Main.cc:9:5: note: suggested alternative: ‘sin’
cin>>a>>b>>x>>y;
^~~
sin
Main.cc:9:16: error: ‘x’ was not declared in this scope
cin>>a>>b>>x>>y;
^
Main.cc:10:5: error: ‘cout’ was not declared in this scope
cout<<(a*x)+(b*y);
^~~~
Main.cc:10:5: note: suggested alternative: ‘cosl’
cout<<(a*x)+(b*y);
^~~~
cosl
Main.cc:8:15: warning: unused variable ‘X’ [-Wunused-variable]
int a, b, X, y;
^