print argv

#include <stdio.h>
int main(int argc, const char **argv) {
  printf("argc = %d\n", argc);
  printf("argv = %p\n", argv);
  for (const char **p = argv; p < argv + argc; ++p) {
    printf("argv = %p, *argv = %p -> \"%s\", **argv = '%c'\n", p, *p, *p, **p);
  }
}