Main.cc: In function 'int main()':
Main.cc:6:10: error: expected ';' before 'a'
cout a*b*c;
^
Main.cc:6:15: warning: statement has no effect [-Wunused-value]
cout a*b*c;
^
Main.cc:4:13: warning: unused variable 'c' [-Wunused-variable]
int a,b,c;
^