c++ - Passing by reference issue? -

the problem trying pass array char arr[6] = {"1","2",etc.} function takes parameter void foo(char* &arr,...) , not work. can explain me please ?

char arr[6] array.

char* &arr a(n lvalue) reference pointer.

now, since argument not of correct type, has converted. array implicitly decays (decaying kind of conversion) pointer first element.

but decayed pointer temporary (an rvalue). non-const lvalue references can not refer rvalues, ill-formed call foo array argument.

you can create pointer variable; can passed foo:

char* ptr = arr; foo(ptr, ...);

the function may modify pointer (i.e. make point other char object), since reference non-const.

ps. there wrong initialization of array. "1" , "2" not char objects.

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