Main.cc: In function 'int main()': Main.cc:6:10: error: 'r1' was not declared in this scope cin>>r1; ^ Main.cc:9:1: error: expected primary-expression before ']' token ] ^ Main.cc:5:12: warning: unused variable 'r' [-Wunused-variable] double r,s; ^ Main.cc:5:14: warning: unused variable 's' [-Wunused-variable] double r,s; ^ Main.cc:9:1: error: expected '}' at end of input ] ^