Basics about Pointers

pointersBasic.c

#include <stdio.h>

int main() {
    int foo = 1994;

    // let pFoo be a pointer that points to an integer variable, whose value is the address of foo
    int* pFoo = &foo;
    printf("pFoo = &foo = %p = %p\n", pFoo, &foo);

    // go to the variable pFoo points to (foo) and get its value. This is called dereferencing pFoo.
    printf("*pFoo = foo = %d = %d.\n", *pFoo, foo);

    printf("&pFoo != &foo (%p != %p)\n", &pFoo, &foo);
    return 0;
}

/* Output:
	pFoo = &foo = 0061FF2C = 0061FF2C
	*pFoo = foo = 1994 = 1994.
	&pFoo != &foo (0061FF28 != 0061FF2C)
*/