Main.cc:4:4: error: expected initializer before 'int' int a; ^ Main.cc:5:4: error: 'cin' does not name a type cin>>a; ^ Main.cc:6:4: error: expected unqualified-id before 'if' if(a>30){ ^ Main.cc:9:4: error: expected unqualified-id before 'else' else{ ^ Main.cc:12:5: error: expected unqualified-id before 'return' return 0; ^