Newbie. help with validity checks

[Keo932]

How would i loop this switch statement if the user does not want to quit after running the selection, lets say 'S'. I tried a do while loop but it only causes errors. Thanks!

char choice;

do{
switch (choice)

{
case 'V': case 'v':
voltage ();
break;
case 'S': case 's':
rev_str();
break;
case 'Q': case 'q':
cout << "Program Terminated" << endl;
break;
default:
cout << "Invalid selection. Please try again" << endl;

}
} while (choice!='Q','q')

[arne]

You may try:

int main( void )
{
    char choice;
    bool quit = false;
 
    while( false == quit && cin >> choice ) {
 
        switch( choice ) {
 
            case 'S':
                cout << "Received " << choice << endl; 
                break;
 
            case 'q':
            case 'Q':
                cout << "Quit ... " <<  endl; 
                quit = true;
                break;
 
            default:
                cout << "Invalid selection " << choice << endl; 
                break;
        }
 
    }
 
    return 0;
}
 

[Keo932]

thanks buddy

[Banfa]

} while (choice!='Q','q')

This line should be written as

} while (choice!='Q' && choice!='q');