Hash

// HashingFunctions.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>

typedef struct
{
    char name[20];
    int facultyNumber;
    Student next;
} Student;

Student *students[1024];

int _tmain(int argc, _TCHAR* argv[])
{
    *students = (Student *)malloc(1024 * sizeof(Student *));
    Student newStudent;
    strcpy(newStudent.name,"Pesho");
    newStudent.facultyNumber = 2012123;
    if(search(newStudent.facultyNumber) != NULL)
    {
        printf("Found!");
    }
    else
    {
        printf("Not found!");
    }

    return 0;
}

Student * search(int facultyNumber)
{
    int currentStudentPositionInArray = returnHashCode(facultyNumber);
    for(Student *current = students[currentStudentPositionInArray]; current!=NULL; current = current->next)
    {
        if(current ->facultyNumber == facultyNumber)
        {
            return current;
        }
    }
    return NULL;
}

int returnHashCode(int key)
{
    int hash = (int)(key % 1024);
    return hash;
}