Convert Integer to Hex String Without sprintf or itoa functions

Code

#include <stdio.h>
#include <stdint.h>



void print_hex(uint16_t num) {
    // Your logic here
    if (num == 0) {
        printf("0");
        return;
    }
    else {
        char arr[] = "0123456789ABCDEF";
        char buffer[4];
        int i = 0;
        while (num > 0) {
            buffer[i++] = arr[num % 16];
            num /= 16;
        }
        for (int j = i - 1; j >= 0; j--) {
            printf("%c", buffer[j]);
        }
    }
}

int main() {
    uint16_t num;
    scanf("%hu", &num);
    print_hex(num);
    return 0;
}

Solving Approach