Function Pointer Parameters
Just as with arrays (§ 6.2.4, p. 214), we cannot define parameters of function type but can have a parameter that is a pointer to function. As with arrays, we can write a parameter that looks like a function type, but it will be treated as a pointer:
// third parameter is a function type and is automatically treated as a pointer to functionvoid useBigger(const string &s1, const string &s2, bool pf(const string &, const string &));// equivalent declaration: explicitly define the parameter as a pointer to functionvoid useBigger(const string &s1, const string &s2, bool (*pf)(const string &, const string &));
When we pass a function as an argument, we can do so directly. It will be automatically ...
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