Opening and closing a file

/* 2101.c: Opening and closing a file */
#include <stdio.h>

enum {SUCCESS, FAIL};

main(void)
{
    FILE *fptr;
    char filename[]= "test.txt";
    int reval = SUCCESS;

    if ((fptr = fopen(filename, "r")) == NULL){
        printf("Cannot open %s.\n", filename);
        reval = FAIL;
    }
    else {
        printf("The value of fptr: 0x%p\n", fptr);
        printf("Ready to close the file.");
        fclose(fptr);
    }

    return reval;
}