Decimal to Hexa decimal

#include<stdio.h>
int main()
{
    int d,r,i,j=0;
    char h[100];
    scanf("%d", &d);
    while(d>0)
    {
        r=d%16;
        if(r<10) h[j]=48+r;
        else h[j]=55+r;
        d=d/16;
        j++;
    }
    for(i=j-1;i>=0;i--) printf("%c", h[i]);
    return 0;
}