/*
 **************************************************************************
 * Program name : 009_Uppercase_and_lowercase (Version 1.00)              *
 * Author       : Duck Wong                                               *
 * Language     : C / C++                                                 *
 * Compiler     : Boodshed Dec-C++ compiler Ver 3.95                      *
 * Computer     : PII350                                                  *
 * O/S          : Windows 98                                              *
 **************************************************************************
 * Version 1.00 : 2000/06/06 - first version                              *
 **************************************************************************
 * Description  : (a) input a sentence                                    *
 *                (b) count no. of lowercase & uppercase letters , words  *
 *                (c) output results                                      *
 **************************************************************************
*/
#include <iostream.h>
#include <stdlib.h>

int main()
{
 // part 1 : declaration and set the initial values
 int   Num_upper, Num_lower, Num_word;
 char  keyin;
 Num_upper= Num_lower= Num_word=0;                                   // Note (1)

 // part 2 : input
 cout << "\nPlease enter a sentence.\n"
      << "This program will count the number of uppercase \n"
      << "letter and lower letter in your sentence.\n" << endl;

 while ((keyin = cin.get()) != '\n')                                 // Note (2)
   {
    if  ((keyin >= 'A') && (keyin <= 'Z')) Num_upper += 1;
    else if  ((keyin >= 'a') && (keyin <= 'z')) Num_lower += 1;
    else if  (keyin == ' ') Num_word += 1;
   };

 // part 3 : output
 cout << "\nNumber of lower case letter in your sentence is : "
      << Num_lower;
 cout << "\nNumber of upper case letter in your sentence is : "
      << Num_upper;
 cout << "\nNumber of word in your sentence is : "
      << Num_word+1 << "\n" << endl;

 system("PAUSE");
 return 0;
}

/* Notes
   (1) Num_upper= Num_lower= Num_word=0; equals to the following statements :
       Num_upper= 0;
       Num_lower= 0;
       Num_word=  0;
   (2) ((keyin = cin.get()) != '\n') means get one character inputted from
       the keyboard once at a time until the ENTER key is pressed.
*/