#include <stdio.h>

/**
 * Displays addresses and bytes in RAM
 * 
 * @param addr      - the first byte to show
 * @param bytes     - the number of bytes to show
 * @param highToLow - if true (!=0), prints higest-address byte first
 * @param base      - 8 for octal, 10 for decimal, else hexadecimal
 */
void showMemory(void *addr, size_t bytes, int highToLow, int base) {
    const char *format = (base == 8) ? "%p: %03o\n" : (base == 10) ? "%p: %3d\n" : "%p: %02x\n";
    if (highToLow) {
        for(unsigned char *p = addr+bytes-1; ((void *)p)>=addr; p-=1) {
            printf(format, p, *p);
        }
    } else {
        for(unsigned char *p = addr; ((void *)p)<addr+bytes; p+=1) {
            printf(format, p, *p);
        }
    }
}

int main(int argc, char *argv[]) {
    char s[] = "⻁ тигр 🐅 tiger व्याघ्र نمر";
    puts("string");
    showMemory(&s, sizeof(s), 0, 16);

    unsigned int tiger = '🐅';
    puts("char");
    showMemory(&tiger, sizeof(tiger), 0, 16);

    unsigned int thing = ~0;
    printf("singed int: %d; unsigned int: %u\n", thing, thing);
    showMemory(&thing, sizeof(thing), 0, 16);
    return 0;
}