Example of malloc and free

//
//  main.m
//  Memory
//
//  Created by Steve on 11/6/12.
//  Copyright (c) 2012 Personal. All rights reserved.
//

#import <Foundation/Foundation.h>

int square(int n) {
    int retval = n * n;
    return retval;
}

int * memget() {
    int * pInt = malloc(10 * sizeof(int));

    if (!pInt) {
        // handle the error
        return;
    }

    *pInt = 5;

    // When done with the memory...
    free(pInt);
}

int main(int argc, const char * argv[])
{
    int i = 5;

    printf("i squared is %d\n", square(i));

    return 0;
}