challenge-119/abigail/c/ch-1.c


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

/*
 * See ../README.md
 */

/*
 * Run as: cc -o ch-1.o ch-1.c; ./ch-1.o < input-file
 */

int main (void) {
    int num;

    while (scanf ("%d", &num) == 1) {
        printf ("%d\n",   (num & ~0xFF)
                        | (num &  0x0F) << 4
                        | (num &  0xF0) >> 4);
    }

    return (0);
}