Main.cc: In function 'int main()':
Main.cc:6:14: warning: right operand of comma operator has no effect [-Wunused-value]
cin >>a,b;
^
Main.cc:8:2: error: expected ';' before 'return'
return 0;
^
Main.cc:8:10: warning: statement has no effect [-Wunused-value]
return 0;
^