Main.cc: In function 'int main()':
Main.cc:5:9: error: 'a' was not declared in this scope
cin>>a+2>>b+2>>y/2>>z/2;
^
Main.cc:5:14: error: 'b' was not declared in this scope
cin>>a+2>>b+2>>y/2>>z/2;
^
Main.cc:5:19: error: 'y' was not declared in this scope
cin>>a+2>>b+2>>y/2>>z/2;
^
Main.cc:5:24: error: 'z' was not declared in this scope
cin>>a+2>>b+2>>y/2>>z/2;
^