Decimal to C binary conversion program

Question

The exercise I’m solving asks to write a program in C(pointer, dynamic and recursive allocation) that prints a given integer on a binary basis. My result is generating a very large number, now I don’t know if this picking up junk from memory or if my code is even wrong.

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <locale.h>

long long int binario(int *n)
{
   long long int *numeroBinario = 0;
   int *resto;
   int i = 1;
   int passo = 1;
   numeroBinario = (long long int*) malloc(sizeof(long long int));
   resto = (int *) malloc(sizeof(int));
   while(*n != 0)
   {
     *resto = *n % 2;
      printf("Passo %d: %d/2, Resto = %d, Quociente = %d\n", passo++, *n,*resto, *n / 2);
     *n = *n / 2;
     *numeroBinario = (*numeroBinario) + (*resto) * i;
     i = i * 10;
   }
   return *numeroBinario;   
}

int main()
{
   int *n;
   int *temp;
   setlocale(LC_ALL, "Portuguese");
   n = (int *) malloc(sizeof(int));
   temp = (int *) malloc(sizeof(int));
   puts("Digite um número: ");
   scanf("%d", n);
   *temp = *n;
   printf("O número %d na base binária é: %lld.\n", *temp, binario(n));
   return 0;
}