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iOS Objective-C Basics (Retired) Functional Programming in C Conditionals - Switch

Michael McChesney
Michael McChesney
939 Points
Posted by Michael McChesney
Michael McChesney
939 Points

Switch Conditional: Can the case value be a variable or does it have to be a string? Ex. variable a versus 'a'?

Can the case value be a variable or does it have to be a string? Ex. variable a versus 'a'?

1 Answer

Robert Bojor
PLUS
Robert Bojor
Courses Plus Student 29,439 Points
Robert Bojor
Robert Bojor
Courses Plus Student 29,439 Points

Hi Max,

The variable goes always as the switch parameter and the case values are always constants. However, you can declare a constant and use that one in the case statement, like in the code below. It is an elegant solution since you can use an enum or constants declared in a header file for better control over the entire app...

int testVar = 1;
    static int const secondVar = 2;
    switch (testVar) {
        case secondVar:
            NSLog(@"Not equal");
            break;
    }

Using variables on both sides of the equation kind of defeats the purpose of the switch statement, use if-else if both sides are variable.