Pointer examples

main.c

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

int main()
{
    int a = 5;
    int *b = &a;

    printf("        a = %d\n", a);
    printf("       &a = %p\n", &a);
    printf("        b = %p\n", b);
    printf("       *b = %d\n", *b);
    printf("     b[0] = %d\n", b[0]);

    int *c = malloc(5 * sizeof(int));
    int i = 0;
    for (; i < 5; ++i)
    {
        c[i] = 5 * i;
    }

    printf("        c = %p\n", c);
    printf("  (c + 3) = %p\n", c + 3);
    printf("     c[3] = %d\n", c[3]);
    printf("    &c[3] = %p\n", &c[3]);
    printf(" *(c + 3) = %d\n", *(c + 3));

    free(c);
    return 0;
}