Count Vowel, Consonants, Digits and Whitespace in C++

In this program will ask the user to give a sentence and then the program using switch statement will count the vowels, consonants, digits and white space using C++.

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Program Listing

#include <iostream>

#include <string>

using namespace std;

main()  {

    string sentence;

    int NumChars=0, VowelCount=0, ConsonantCount=0;

    int whitespace=0, digits=0;

    cout << "Enter a String :=> ";

    getline(cin,sentence);

    NumChars = sentence.length();

    for (int i=0; i < NumChars; i++) {

          switch(sentence.at(i)) {

              case 'a' : case 'A' :

              case 'e' : case 'E' :

              case 'i' : case 'I' :

              case 'o' : case 'O' :

              case 'u' : case 'U'  : VowelCount++;

                                     break;

              case 'b' : case 'B' :

              case 'c' : case 'C' :

              case 'd' : case 'D' :

              case 'f' : case 'F' :

              case 'g' : case 'G' :

              case 'h' : case 'H'  :

              case 'j' : case 'J'  :

              case 'k' : case 'K' :

              case 'l' : case 'L' :

              case 'm' : case 'M' :

              case 'n' : case 'N' :

              case 'p' : case 'P'  :

              case 'q' : case 'Q' :

              case 'r' : case 'R' :

              case 's' : case 'S' :

              case 't' : case 'T' :

              case 'w' : case 'W'  :

              case 'x' : case 'X' :

              case 'y' : case 'Y' :

              case 'z' : case 'Z' :  ConsonantCount++;

                                     break;

              case '  '  : whitespace++;

                           break;

              case '1' : case '2' :

              case '3' : case '4' :

              case '5' : case '6' :

              case '7' : case '8' :

              case '9' : case '0'  : digits++;

          }

    }

    cout << "\n\n";

    cout << " \n ===  SUMMARY OF REPORTS ===== ";

    cout << "\n\n";

    cout << "\nNumber of Vowels     :=> " << VowelCount << ".";

    cout << "\nNumber of Consonants :=> " << ConsonantCount << ".";

    cout << "\nNumber of Digits     :=> " << digits << ".";

    cout << "\nNumber of WhiteSpce  :=> " << whitespace << ".";

    cout << "\n\n";

    system("PAUSE");

}