2 cin.getlines()??

[Windwhistles]

Hello,
Why is it that this code needs two cin.getline(response, 4);?
If I run it with one it still works, but the output is

Restart program?  Invalid, enter (y/n)

as opposed to simply asking the user if they want to restart the program.

bool restart()  //returns false if the user wants to restart the program
{
    char response[4]; //holds the users response
    string answer;
    stringstream convert;

    cout<<"Restart the program?  ";
    cin.getline(response, 4);
    cin.getline(response, 4);

    while(true)
    {
        //convert response to lowercase
        for(int i=0; i<strlen(response); i++)
        {
            response[i]=tolower(response[i]);
        }

        convert<<response;  //write to 'convert'

        answer=convert.str();

        if(answer=="y" || answer=="yes")    //if yes
        {
            clr();  //clear the screen
            return false;
        }
        else if(answer=="n" || answer=="no")    //if no
        {
            return true;
        }
        else
        {
            cout<<"\aInvalid, enter (y/n).  ";
            cin.getline(response, 4);
        }
    }
}

[GRex2595]

Try putting cin.ignore(); above the output and remove a getline.

[Windwhistles]

Thanks Grex2595.