纯小白刚入们想问一下这个为什么提示我结尾错误

#include <iostream>
using namespace std;
int main()
{
  cout<<"This"<<"is"; 
  cout<<"a"<<"C++";
  cout<<“program.”
  return0;
  }

#include <iostream>
using namespace std;
int main()
{
  cout<<"This"<<"is";
  cout<<"a"<<"C++";
  cout<<"program.";
  return 0;
  }

 第7行没加分号结束，return 0要分开写