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

#include <stdio.h>
#include <stdint.h>
char itox[16]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
void print_hex(uint16_t num) {
    if(num>>12&0xf) printf("%c",itox[num>>12&0xf]);
    if(num>>8&0xf) printf("%c",itox[num>>8&0xf]);
    if(num>>4&0xf) printf("%c",itox[num>>4&0xf]);
    printf("%c",itox[num&0xf]);
}

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