CODEWITHSUNDEEP
c++vector
noodle
noodle

Reputation: 19

vector output in C++

I have written a program that outputs the maximum and minimum number of days frost was recorded along with the corresponding year and month. I am reading this data from a file and inputting what i need into vectors.

In the file the months are displayed in integers 1-12, My question is that in my program when outputting the month, how can I output "January" when in the the file it's a 1?

Upvotes: 0

Views: 286

Answers (2)

Thomas Matthews
Thomas Matthews

Reputation: 57688

If your compiler doesn't support std::array, you can use a fixed array of characters: 

static const char * month_names[] =
{
  "Dummy", // to make names line up with month numbers.
  "January", "February", "March", "April", "May", "June",
  "July", "August", "September", "October", "November", "December",
};

int main(void)
{
  for (unsigned int m = 1; m <= 12; ++m)
  {
    cout << m << ") " << month_names[i] << endl;
  }
  return EXIT_SUCCESS;
}

Note: The type char * is used for the array since char * can be stored as fixed data and accessed directly. Using std::string would involve creating a std::string instance for each month name before accessing them.

Upvotes: 0

Cory Kramer
Cory Kramer

Reputation: 117866

You can make a std::array of std::string. The index will correspond to the month name. Just make sure you account for 0-based indexing, e.g. "January" == 0, not 1.

std::array<std::string, 12> months = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};

Then

cout << "The highest number of days frost was recorded is: " 
     << maxFrost 
     << ". The date was: " 
     << months[maxMonth - 1]   // adjust to 0-based index
     << ", " 
     << maxFyear 
     << ".\n" 
     <<endl; // maximum frost with month and year

Upvotes: 2

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