Thread: when i run the program windows says "7-pass.exe has stopped working".

i named the program 7-pass.cpp.
Modify your password program from before to put all of the password checking logic into a
separate function, apart from the rest of the program.

Code:

#include<iostream>
#include<string>
using namespace std;
string passcheck(string check)
{
    string pass;
    pass=("abcd");
    if(pass==check)
        {
            cout<<"access granted!";
        }
    else
        {
            cout<<"acess denied!";
        }
}
int main()
{
    string password;
    cout<<"enter your password:\n";
    cin>>password;
    cout<<passcheck(password);
}

the program runs and displays the results correctly but everytime it shows 7-pass.exe has stopped working.is something wrong?