I have a method that checks if the user is a student, but I can't get it validate the conditions.
char custStud = '0';
Scanner input = new Scanner(System.in);
do{
System.out.println("Are you a student? (Type Y or N): ");
custStud = input.next().charAt(0);
custStud = Character.toLowerCase(custStud);
}
while (custStud != 'y' || custStud != 'n');
When I fire up this program, it does not break the loop, even if 'y' or 'n' are entered. I suspect custStud might have accidentally changed types when changed to lowercase, but I'm not sure. How can I make this loop work properly?
while (custStud != 'y' || custStud != 'n')
is always true, since custStud
can't be equal to both 'y' and 'n'.
You should change the condition to:
while (custStud != 'y' && custStud != 'n')
You've mistaken here:
while (custStud != 'y' || custStud != 'n');// wrong
while (custStud != 'y' && custStud != 'n');// correct
Try running this code:
char custStud = '0';
Scanner input = new Scanner(System.in);
do{
System.out.println("Are you a student? (Type Y or N): ");
custStud = input.next().charAt(0);
custStud = Character.toLowerCase(custStud);
}
while (custStud != 'y' && custStud != 'n');
System.out.print("\n answer:"+custStud);
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