问一下我这个程序在vs2012为什么运行不了

#include<iostream>
int main()
{
std::cout << "Please enter two numbers" << std::endl;
int v1 = 0 , v2 = 0;
std::cin >> v1 >> v2 ;
std::cout << " The sum of "<< v1 << " and " << v2
<< " is " << v1 + v2 << std::cout;
return 0;
}