Main.cc:3:5: error: cannot declare ‘::main’ to be a global variable int main { ^~~~ Main.cc:4:5: error: expected primary-expression before ‘int’ int a=10,b=29,c=34; ^~~ Main.cc:4:5: error: expected ‘}’ before ‘int’ Main.cc:3:10: note: to match this ‘{’ int main { ^ Main.cc:5:5: error: ‘cin’ does not name a type; did you mean ‘main’? cin >> a; ^~~ main Main.cc:6:5: error: ‘cin’ does not name a type; did you mean ‘main’? cin >> b; ^~~ main Main.cc:7:5: error: ‘cin’ does not name a type; did you mean ‘main’? cin >> c; ^~~ main Main.cc:8:5: error: expected unqualified-id before ‘if’ if (c>b>a){ ^~ Main.cc:11:5: error: expected unqualified-id before ‘return’ return 0; ^~~~~~ Main.cc:12:1: error: expected declaration before ‘}’ token } ^