116. Convert Decimal Number to Binary or Hex Without itoa function

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

void print_base(uint16_t num, uint8_t base) {
    // Your logic here
    int t,d,a;
    int k=0;
    if(base==2){t=15;d=1;a=1;}
    else {t=12;d=4;a=15;}
    
    for(int i=t;i>=0;i-=d)
    {
        if((num>>i)&a!=0) k=1;
        if(k==1)
        printf("%X",(num>>i)&a);
    }
    if(k==0)printf("%X",0);
}

int main() {
    uint16_t num;
    uint8_t base;
    scanf("%hu %hhu", &num, &base);

    print_base(num, base);
    return 0;
}