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("%d",0);
        return;
    }

    char res[100];
    int i=0;

    while(num>0)
    {
        int temp=num%16;
        
        if(temp<10)
        res[i++]=temp+'0';
        else
        res[i++]=temp+'A'-10;

        num/=16;
    }
    for(int j=i-1;j>=0;j--)
    printf("%c",res[j]);
}

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

Solving Approach