120. Convert Integer to Hex String Without sprintf or itoa functions

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

void print_hex(uint16_t num) {
    // Your logic here
    char tmp[4]={0};
    int cnt=0;

    char hex[17]="0123456789ABCDEF";

    if (num==0){
        printf("0");
        return;
    }

    for (int i=0;num>0;i++){
        tmp[i]=hex[num%16];
        num/=16;
        cnt++;

    }

    for (int i=0;i<cnt;i++){
        printf("%c",tmp[cnt-1-i]);
    }
}

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