#include <iostream>
#include <stdio.h>

using namespace std;

int main(int argc, char** argv) {


  int opcao;

  do {

  	  printf("\n-------------------MENU------------------------");
	  printf("\n		Escolha a opcao");
	  printf("\n ______________________________________________ ");
	  printf("\n |1 - Informar venda diaria                   |");
	  printf("\n |2 - Visualizar vendas diarias do mes        |");
	  printf("\n |3 - Calcular media mensal de vendas diarias |");
	  printf("\n |4 - Sair                                    |");
	  printf("\n |____________________________________________|\n");

	  scanf("\n%d", &opcao);

	  printf("option -> %d\n", opcao);

	  system("cls");

	  switch (opcao)
	  {
	  	case 1:
	  	  printf("1!\n");
	  	  break;
		case 2:	printf("2!\n");
		  break;
		case 3:
		  printf("3!\n");
		  break;
		case 4:
		  printf("do nothing!\n");
		  break;
		default: printf("\nOpcao invalida, tente de novo"); break;
	  }

  }	while (opcao != 4);
	return 0;
}