Problems with case 'p' || 'P': syntax within a switch statement in C++

Question

I\'ve used the switch statement the following way:

   switch (ch){
   case \'P\' || \'p\': 
        goto balance;
        break;

   case \'r\' || \'R\':
           


        

Answer 1

|| is a binary operator; 'P' || 'p' evaluates to true, because the left-hand operand of || is non-zero. Same thing for 'R' || 'r'. So both case statements are case true:, and that's what the compiler is complaining about. Separate the values:

case 'P':
case 'p':
    menu(); // function call recommended instead of `goto`
    break;