C: Behaviour of arrays when assigned to pointers

Question

#include 

main()
{
  char * ptr;

  ptr = \"hello\";


  printf(\"%p %s\" ,\"hello\",ptr );

  getchar();

}

Hi, I am trying to underst

Answer 1

Say what?

Your code allocates 6 bytes of memory and initializes it with the values 'h', 'e', 'l', 'l', 'o', and '\0'.

It then allocates a pointer (number of bytes for the pointer depends on implementation) and sets the pointer's value to the start of the 5 bytes mentioned previously.

You can modify the values of an array using syntax such as ptr[1] = 'a'.

Syntactically, strings are a special case. Since C doesn't have a specific string type to speak of, it does offer some shortcuts to declaring them and such. But you can easily create the same type of structure as you did for a string using int, even if the syntax must be a bit different.