text: #include <stdio.h>
  
  int buscaSimplesSentinela(int vetor[], int n, int item) {
      int i = 0;
      vetor[n] = item;
      while (1) {
          if (vetor[i] == item)
              break;
          i++;
      }
      if (i < n)
          return i;
      return -1;
  }