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I've been writing C and C++ code for almost twenty years, but there's one aspect of these languages that I've never really understood. I've obviously used regular casts (i.e.

MyClass *m = (MyClass *)ptr; 

all over the place, but there seem to be two other types of casts, and I don't know the difference. What's the difference between the following lines of code?

MyClass *m = (MyClass *)ptr; MyClass *m = static_cast<MyClass *>(ptr); MyClass *m = dynamic_cast<MyClass *>(ptr); 

I've been writing C and C++ code for almost twenty years, but there's one aspect of these languages that I've never really understood. I've obviously used regular casts i.e.

MyClass *m = (MyClass *)ptr; 

all over the place, but there seem to be two other types of casts, and I don't know the difference. What's the difference between the following lines of code?

MyClass *m = (MyClass *)ptr; MyClass *m = static_cast<MyClass *>(ptr); MyClass *m = dynamic_cast<MyClass *>(ptr);