#include <iostream.h>
#include <ctype.h>     // required for the character function library

void ConvertToUpper(char []);

int main()
{
  const int MAXCHARS = 100;
  char message[MAXCHARS];

  cout << "\nType in any sequence of characters: ";
  cin.getline(message,MAXCHARS);

  ConvertToUpper(message);

  cout << "The characters just entered, in uppercase are: "
       << message << endl;

  return 0;
}

// this function converts all lowercase character to uppercase
void ConvertToUpper(char message[])
{
  for(int i = 0; message[i] != '\0'; i++)
    message[i] = toupper(message[i]);

  return;
}