C++ Question

#ifdef ORIGINAL /* see below for updated version */
// i am learn this simple code but he tell me id returned 1 exit status

#include<iostream>
#include<cstdlib>

namespace month_name
{
 void jan();
 void feb();
 void print();
 //...
}
namespace month_number
{
 enum month_year{
 jannuary =1 , febuary , mar
 };
 month_year month;
}

void month_name::jan()
    {int cnt=1;
    for(size_t i=1; i<31; i++)
          {cnt++;
           std::cout << i << "\t";
        if(cnt == 7)
        {std::cout << std::endl;}
        else if (cnt == 14)
        {std::cout << std::endl;}
        else if(cnt == 21)
        {std::cout << std::endl;}
        else if(cnt == 28)
        {std::cout << std::endl;}}}

void month_name::feb()
    {int cnt=1;
    for(size_t i=1; i<30; i++)
           {cnt++;
           std::cout << i << "\t";
        if(cnt == 7)
           {std::cout << std::endl;}
           else if (cnt == 14)
        {std::cout << std::endl;}
        else if(cnt == 21)
        {std::cout << std::endl;}
         else if(cnt == 28)
        {std::cout << std::endl;}}}
void month_name::print()
           {switch(month_number::month)
        {case month_number::jannuary:
 month_name::jan();
 break;
 case month_number::febuary:
 month_name::feb();
 break;
 default:
 std::cerr << "not enough" << std::endl;}

#else

// i am learn this simple code but he tell me id returned 1 exit status
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// cleaned up and working:

#include <iostream>
#include <iomanip>
#include <cstdlib>

namespace month_name {
  void jan();
  void feb();
  void print();
  //...
}

namespace month_number {
  enum month_year {
    january = 1, febuary, march,
  };
  month_year month;
}

void month_name::jan() {
  int cnt = 0; // 1;
  for (size_t i = 1; i < 32; i++) {
    cnt++;
    // std::cout << i << "\t";
    std::cout << std::setw(5) << i; // << "\t";
    if (cnt == 7) {
      std::cout << '\n'; // std::endl;
    }
    else if (cnt == 14) {
      std::cout << '\n'; // std::endl;
    }
    else if (cnt == 21) {
      std::cout << '\n'; // std::endl;
    }
    else if (cnt == 28) {
      std::cout << '\n'; // std::endl;
    }
  }
}

void month_name::feb() {
  int cnt = 0; // 1;
  for (size_t i = 1; i < 30; i++) {
    cnt++;
    // std::cout << i << "\t";
    std::cout << std::setw(5) << i; // << "\t";
    if (cnt == 7) {
      std::cout << std::endl;
    }
    else if (cnt == 14) {
      std::cout << std::endl;
    }
    else if (cnt == 21) {
      std::cout << std::endl;
    }
    else if (cnt == 28) {
      std::cout << std::endl;
    }
  }
}

void month_name::print() {
  switch (month_number::month) {
  case month_number::january:
    month_name::jan();
    break;

  case month_number::febuary:
    month_name::feb();
    break;

  default:
    // std::cerr << "not enough" << std::endl;
    std::cout << "not enough" << std::endl;
    break;
  }
}

int main(int argc, char const * argv[]) {

  month_number::month = month_number::month_year::january;
  month_name::print();
  std::cout << '\n' << '\n';

  month_number::month = month_number::month_year::febuary;
  month_name::print();
  std::cout << '\n' << '\n';

  month_number::month = month_number::month_year::march;
  month_name::print();
  std::cout << '\n' << '\n';

  return 0;
}

#endif