为什么程序编译没错误,却执行不了

我编的这个程序


#include <iostream>
int main()
{
    double radius;
    double area;
    std::cout << "enter a radius: ";
    std::cin >> radius;
    area=radius * radius * 3.14159;
    std::cout << "The area is ";
    std::cout << "The area is " << area << std::endl;
        return 0;
}
编译成功了,但是不能成EXE,说有错误,为什么啊