문자열의 값을 16진수와 2진수로 출력

#include <stdio.h>
#include <limits.h>
 
void show_memory(const char *ap_str)
{
    const char *s = ap_str;
    printf("====================\n");
    while (*ap_str != '\0') {
        printf("%C %0*X ", *ap_str, (CHAR_BIT + 3) / 4, *ap_str);
 
        for (int i = CHAR_BIT - 1; i >= 0; i--)
            printf("%c", ((*ap_str >> i) & 1U) ? '1' : '0');
 
        *ap_str++;
        printf("\n");
    }
    printf("====================\n\n");
 
 
    printf("====================\n");
    do {
        int i;
        printf("%C %0*X ", *s, (CHAR_BIT + 3) / 4, *s);
 
        for (i = CHAR_BIT - 1; i >= 0; i--)
            printf("%c", ((*s >> i) & 1U) ? '1' : '0');
 
        printf("\n");
    } while (*++s != '\0');
    printf("====================\n");
}
 
void main(void)
{
    show_memory("string");
}