#include <stdio.h>

void printbits_char (unsigned char v);

int main (void)
{
    printbits_char ('a');
    printf("    %c\n", 'a');

    printbits_char ('b');
    printf("    %c\n", 'b');

    printbits_char ('c');
    printf("    %c\n", 'c');

    printbits_char ('\011');
    putchar('\n');

    return 0;
}