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

void set_to_7(int* a_n) {
    *a_n = 7;
    // Write 7 at address a_n.
}

int main(int argc, char* argv[]) {
    int n = 5;
    printf("n == %d\n\n", n);

    set_to_7(&n);
    printf("set_to_7(&n);\n");
    printf("n == %d\n", n);
    
    return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */

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