Strange class error

I just don't understand why I get this error when I compile this single file main.cpp

#include <iostream>
#include <string>

class Hola{
    private:
        std::string saludo;
    public:
        Hola();
        void salut();
};

Hola::Hola(){}

void Hola::salut(){
    std::cout << "El string es " << saludo << std::endl;
}

int main{
    Hola greet;
    greet.salut();
}

And the compiling error when I type g++ -std=c++11 -o main main.cpp in the console is:

main.cpp:19:7: error: expected primary-expression before ‘greet’
  Hola greet;
       ^
main.cpp:19:7: error: expected ‘}’ before ‘greet’
main.cpp:19:7: error: expected ‘,’ or ‘;’ before ‘greet’
main.cpp:20:2: error: ‘greet’ does not name a type
  greet.salut();
  ^
main.cpp:21:1: error: expected declaration before ‘}’ token
 }
 ^

For whoever that asks, I made this simple program because I didn't understand another one much larger and tried to simplify so I get what's wrong.