Count Vowels in a String in Pascal

 A program that will ask the user to give a string or sentence and then the program will count the vowels in a string or sentence using Pascal programming language.

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Program Listing
program CountVowels;

var
   inputStr: string;
   count: integer;
   i: integer;

begin
   count := 0;
   writeln;
   write('Count Vowels in a String in Pascal');
   writeln;
   writelnl
   write('Enter a string: ');
   readln(inputStr);
   
   for i := 1 to length(inputStr) do begin
      case inputStr[i] of
         'a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U': count := count + 1;
      end;
   end;
   writeln;
   writeln('The number of vowels in the string is: ', count);
   readln;
end.