#include <stdio.h>
#include <float.h> 

struct PlayStruct {
  int int_value;
  double double_value;
  char a_string[64];
};

void print_struct(struct PlayStruct ps, struct PlayStruct* pps)
{
    printf("Values of struct ps: %d, %lf, %s\n", ps.int_value, ps.double_value, ps.a_string);
    printf("Values of struct pps %d, %lf, %s\n", pps->int_value, pps->double_value, pps->a_string);
}

void change_struct(struct PlayStruct ps, struct PlayStruct* pps)
{
    ps.int_value = 2;
    ps.double_value = 3.0;

    pps->int_value = 4;
    pps->double_value = 5.0;
}

void print_string(char string_to_print[])
{
    printf("%s\n", string_to_print);
}

void change_string(char string1[], char *p_string)
{
    string1[2] = '\0';
    p_string[1] = '\0';
}

int main(int argc, char* argv[])
{
    struct PlayStruct play_struct = {1, 2.0, "Hello!"};

    print_struct(play_struct, &play_struct);
    change_struct(play_struct, &play_struct);
    //only the struct from the pointer will be changed, the other one doesnt, as it is a local var
    print_struct(play_struct, &play_struct);

    print_string(play_struct.a_string);
    char another_string[16] = "World!";

    change_string(play_struct.a_string, another_string);
    print_string(play_struct.a_string);
    print_string(another_string);
    //both will be changed, because they are both pointers

    return 0;
}