C - Usando atoi e gets

#include stdio.h
#include stdlib.h

void main()
{
  int houses, hotels, total;
  char temp[4];

  printf("Enter the number of houses:");
  gets(temp);
  houses=atoi(temp);

  printf("Enter the number of hotels:");
  gets(temp);
  hotels=atoi(temp);

  total=houses*40+hotels*115;

  printf("You owe the bank $%i.\n",total);
}

referencia - gets
referencia - atoi