#include <stdio.h> #include <stdlib.h> int main () { int i; char str[33]; printf ("Enter a number: "); scanf ("%d",&i); itoa (i,str,10); printf ("decimal: %s\n", str); itoa (i, str, 16); printf ("hexadecimal: %s\n", str); itoa (i, str, 2); printf ("binary: %s\n", str); return 0; }