Main.cc:16:2: error: expected unqualified-id before 'return'
return 0;
^
Main.cc: In function 'int main()':
Main.cc:21:5: error: redefinition of 'int main()'
int main(){
^
Main.cc:5:5: note: 'int main()' previously defined here
int main(){
^
Main.cc: At global scope:
Main.cc:32:2: error: expected unqualified-id before 'return'
return 0;
^