Can Multiple Cases in a Switch Statement Share the Same Code Block Without Explicit Repetition?

Allowing Multiple Cases in Switch Statements

In programming, switch statements provide a means of executing specific code blocks based on a given condition. While commonly used with a single case per block, it's sometimes desirable to allow multiple cases to execute the same code. In this context, a developer asks whether there is a way to fall through multiple cases without explicitly stating each one.

In standard C syntax, the developer's proposed approach using commas to separate multiple cases is not recognized. However, an alternative exists that allows for a more concise and manageable way of handling multiple cases.

Instead of comma-separated cases, the developer can use the case ... : syntax. By specifying multiple cases followed by a single colon, the code will automatically fall through and execute the same block of code for all listed cases.

For example, the following code achieves the desired effect:

switch (value) {
    case 1:
    case 2:
    case 3:
        // Do something
        break;
    case 4:
    case 5:
    case 6:
        // Do something else
        break;
    default:
        // Default action
        break;
}

This syntax provides a cleaner and more readable way of handling multiple cases in a switch statement, eliminating the need for multiple case statements and reducing the potential for errors.

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