Web Reference: Nov 14, 2025 · One of the most useful applications of function pointers is passing functions as arguments to other functions. This allows you to specify which function to call at runtime. Construction starts with the thing at the right: The thing returned, which is the function taking char. To keep the declarators distinct, i'm going to number them: Inserted the char parameter directly, since it's trivial. Adding a pointer to declarator by replacing D1 by *D2. Note that we have to wrap parentheses around *D2. That can be known by lo... Function pointers let you decide which function to run while the program is running, or when you want to pass a function as an argument to another function. Think of it like saving a phone number - the pointer knows where the function lives in memory, so you can "call" it later.
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