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

Change it to

case 'P':
case 'p': 
    goto balance;
    break;

Using goto is usually not a good idea.

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In your original code, case 'P' || 'p': is equivalent to case 1 as the result of || is 0 if both operand are zero, or 1 otherwise. So in the two case statement, both 'p' || 'P' and 'r' || 'R' evaluated as 1, that's why you got the warning about duplicate case value.