Why I get; initializing 'char *' with an expression of type 'const char *' discards qualifiers?

Question

I can\'t figure out why I get this warning from clang by myself:

function_prototype_const_modifier.c:13:8: warning: initializing \'char *\' with         


        

Answer 1

Because type of L.H.S is char * and type of R.H.S is const char *.

The reason is exactly as what error says:

function_prototype_const_modifier.c:13:8: warning: initializing 'char *' with an expression of type 'const char *' discards qualifiers

The statement allows you to discard the const qualifier and it allows to modify the pointed string through ptr1 and ptr2 and hence the compiler complains.