// Pantea Aria

// Returning a pointer to a struct
// Dynamic memory allocation using malloc
// dereferencing using -> 
// Freeing memory using free




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

#define MAX_LEN 100

struct student {
    char name[MAX_LEN];
    int id;
};

// Function prototypes
struct student *create_student(char *name, int id);
void print_student(struct student s);

int main(void) {

    // 1. Create a student id =12345 name = "Pantea Aria"
    struct student *new_student = create_student("Pantea Aria", 12345);
    

    // 2. Print student details
    print_student(*new_student);
    

    // 3. Free allocated memory
    free(new_student);
    

    return 0;
}

// Function to create a student and return pointer - ToDo
struct student *create_student(char *name, int id) {
    // allocate memory for the student 
    struct student *new = malloc(sizeof(struct student));

    // check if malloc worked correctly
    if (new == NULL) {
        printf("malloc ERROR\n");
        return NULL;
    }
    
    // assign name and id to the new struct 
    strcpy(new->name, name);  
    new->id = id;
    
    // return the new student
    return new;

    
}

// Function to print student details - ToDo
void print_student(struct student s) {
    printf("Name: %s\n", s.name);
    printf("ID: %d\n", s.id);
}