How to convert decimal to hexadecimal in C++???

int main(int argc, char **argv)
{
int a;
printf (“Masukkan angka decimal = “); scanf (“%d”,&a);
char outStr [256];
int inDec=a;
sprintf (outStr,”%X”,inDec);
printf (“%d dalam hexadecimal = %s\n”,inDec, outStr);
getch ();
return 0;
}