Returning Control from a Function to Its Caller

There are several ways to return control to the point at which a function was invoked. If the function does not return a result (i.e., it has a void return type), control returns when the program reaches the function-ending right brace, or by execution of the statement

return;

If the function does return a result, the statement

         return expression;

evaluates expression and returns the value of expression to the caller. Some compilers issue errors and others issue warnings if you do not provide an appropriate return statement in a function that’s supposed to return a result.

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