Thread: pointer to a pointer

Okay, let's start with a simpler example.

Code:

#include <stdio.h>

void GetAirplaneType(char **dest)
{
    printf("print of the pointer value inside the function: %s %p\n", *dest, (void*)(*dest));
    char new_dest[] = "Big Deal";
    *dest = new_dest;
}


int main()
{
    // Let's start with an array, not a const char*.
    char des[100] = "New York";
    printf("print of the pointer value outside the function: %s %p\n", des, (void*)des);

    // Create a pointer that is pointing to the variable des.
    char *n_des = des;
  
    GetAirplaneType(&n_des);

    printf("print of the pointer value outside the function: %s %p\n", n_des, (void*)n_des);

}

Note: You probably shouldn't be playing with pointers but instead copy the C-strings.

Code:

#include <stdio.h>
#include <string.h>

void GetAirplaneType(char *dest)
{
    strcpy(dest, "Big Deal");
}


int main()
{
    char des[100] = "New York";
    printf("print of the pointer value before the function: %s \n", des);

    GetAirplaneType(des);

    printf("print of the value after the function: %s \n", des);

}

thank you guys very more for explanations!
im new here, how can i thumbs up for you guys?