Which keyword indicates a default case in a switch statement?

In a switch statement, the keyword "default" is crucial for defining a fallback case that executes when none of the specified case conditions match the provided expression. This allows the programmer to handle unexpected or unrecognized values gracefully.

For example, in a switch statement assessing the value of a variable, if none of the defined cases match, the code within the "default" block will execute. This ensures that the program can continue running smoothly without crashing or behaving unpredictably when faced with an unhandled value. Incorporating a "default" case is a best practice that enhances the robustness of your code.

The other keywords, such as "case," are used to define specific scenarios within the switch statement, while "else" pertains to conditional statements like if-else. The "switch" keyword itself is used to initiate the switch structure. However, it is the "default" keyword that specifically indicates the default case, making it key to the functionality of a switch statement.