Untitled

void check_email()
{
    int flag1 = 0;//Will change as soon as we find an error
    int flag2 = 0;//Will change once we get to @
    char tav = NULL;
    cout<<"Enter email"<<endl;
    cin>>tav;
    //getchar();
    
    while (tav != ' ')
    {
        if ((tav < 'a') && (tav > 'z') && (tav < 'A') && (tav > 'Z') && (tav < '0') && (tav > '9') && (tav != '@') && (tav != '.') && (tav != '_'))//Check that it was OK

        {
            flag1 = 1; //An error was found
            cout<<"Try again : your email address is not correct"<<endl;
            cin>>tav;
            getchar();
        }
        else
        {
            flag1 = 0;
            flag2 = 1;
        }
        if (flag2 == 1)
        {
            if ((tav < 'a') && (tav > 'z') && (tav < 'A') && (tav > 'Z') && (tav < '0') && (tav >'9') && (tav != '.'))
            {
                flag1 = 1; //An error was found
                cout<<"Try again : your email address is not correct"<<endl;
                cin>>tav;
                getchar();
            }
        }
        cout<<"Your email address is correct"<<endl;

    }
    
    
    
    
}