c_programming_language/exercices/pointers/generic_pointers.c

#include <stdio.h>
int main() {
  int x = 10;
  double y = 3.14;
  char c = 'a';

  void *ptr;
  ptr = &x;
  printf("%d\n", *(int *)ptr);
  ptr = &y;
  printf("%.2f\n", *(double *)ptr);
}