Help me in solving STR7 problem

Problem Link: CodeChef: Practical coding for everyone
Learning course: Learn C++

My code

// Update the blanks below to print the first 3 characters of the String
// There is also a syntax error - try and fix it to debug the code

#include <bits/stdc++.h>
using namespace std;

int main() {
  string var = "String";
  cout << var[ 0 ];     //print the first 3 characters -their index is 0,1,2
  cout << var[ 1 ];
  cout << var[ 2 ];
  return 0.  //The;  was missing.
  This is a very common mistake!!!
}

My issue

#include <bits/stdc++.h>
using namespace std;

int main() {
string var = “String”;
cout << var[0];
cout << var[1];
cout << var[2];
return 0;
}