char [length] initialization and dealing with it

Question

I have defined a char array:

char d[6];

Correct me if I\'m wrong regarding following:

At this moment no memory is allocated for variabl

Answer 1

How to know was char[] initialized? I need pattern if filled(d){..}

Just do this while declaring the character array:

char d[6];
d[0] = 0;

Then you can check like this:

if(strlen(d) == 0)
//d is not initialized