How do you use a pointer to a function?

The hardest part about using a pointer-to-function is declaring it. Consider an example. You want to create a pointer, pf, that points to the strcmp() function. The strcmp() function is declared in this way: int strcmp(const char *, const char * ) To set up pf to point to the strcmp() function, you want a declaration that looks just like the strcmp() function�s declaration, but that has *pf rather than strcmp: int (*pf)( const char *, const char * ); After you�ve gotten the declaration of pf, you can #include <string.h> and assign the address of strcmp() to pf: pf = strcmp;