#include<iostream>
#include<iostream.h>
#include<math.h>
int a,b,c;
using namespace std;
int main();
{
cin>>a>>b>>c;
cout<<"gia tri a="<<a<<endl<<"gia tri b="<<b<<endl<<"gia tri c="<<c;
return ;
}

Line 7: error: expected unqualified-id before '{' token
compilation terminated due to -Wfatal-errors.