constness and pointers to pointers

Question

I\'m very much confused about the const keyword. I have a function accepting an array of strings as input parameter and a function accepting a variable number o

Answer 1

Actually if there is a function that accepts a const char** and you pass a char** , this can lead to a problematic situation and viceversa.

In your specific case you expect that the memory is immutable, but it's not immutable and may change at any time. In a multithreading environment you would expect this memory to be thread safe, and as long as it's living in the stack or heap, you wouldn't need a mutex to access to it.

All this is oriented to avoiding errors, but if you are sure that this wouldn't lead to an error you can simply cast the pointer to const char** .