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

int main(int argc, char* argv[]) {
    
    int  n   = 5;
    int* a_n = &n;  // a_n shall hold the address of an int, and is
                    // initialized to the address of n.
    
    printf("*a_n = %d\n", *a_n);  // print the value at a_n.

    printf(" a_n = %p\n", (void*)a_n);  // print the address a_n.
    // void* means any address.
    // int*  means the address of an int.

    return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */

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