[Solved] C: Whats the difference between pointer = variable and pointer = &variable?

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ptr is the actual pointer, while *ptr is whatever it is pointing at, so *ptr=&var does not really make any sense, unless it’s a pointer to a pointer. It’s either ptr=&var or *ptr=var

If you really want to assign a variable to a pointer, it is possible with casting. This compiles, but I cannot see any good reason to do something like this at all:

#include <stdio.h>
main()
{
  int var=4;
  int *ptr;
  ptr = (int *)var;
  printf("%d\n", *ptr);
}

The behavior is undefined. When I ran it, it segfaulted.

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solved C: Whats the difference between pointer = variable and pointer = &variable?