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Write a program that prompts the user to input a sequence of characters and outputs the number of vowels.(Use the function isVowel written in Programming Exercise 2.)Your output should look like the following:There are # vowels in this sentence.... where # is the number of vowels.here is what i have so far:#include #include using namespace std;//functions declaredbool isVowel(char ch);int main (){string letters;int num = 0;int len;cout<<"Enter a sequence of characters: ";getline(cin, letters);len = letters.length();for (int i = 0; i < len; i++){if (isVowel(letters[i]))num++;}if (num == 0)cout << "There were 0 vowels.\n";else if (num == 1)cout << "There was 1 vowel.\n";elsecout << "There were " << num << " vowels.\n";//this keeps the prompt console from closingsystem ("pause");// this adds butter to the potatoesreturn 0;}// closing main function// function to identify vowelsbool isVowel(char ch){// make it lower case so we don't have to compare// to both 'a' and 'A', 'e' and 'E', etc.char ch2 = tolower(ch);if (ch2 == 'a' || ch2 == 'e' || ch2 == 'i' || ch2 == 'o' || ch2 == 'u')return true;elsereturn false;}

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Answer:

This is the code:

Explanation:

count_vowels.cpp

#include <iostream>

#include <string>

using namespace std;

//functions declared

bool isVowel(char ch);

int main ()

{

  string letters;

  int num = 0;

  int len;

  cout<<"Enter a sequence of characters: ";

  getline(cin, letters);

  len = letters.length();

  for (int i = 0; i < len; i++)

  {

      if (isVowel(letters[i]))

          num++;

  }

  cout << "There are "<<num<<" vowels in this sentence."<<endl;

  //this keeps the prompt console from closing

  system ("pause");

  // this adds butter to the potatoes

  return 0;

}// closing main function

// function to identify vowels

bool isVowel(char ch)

{

// make it lower case so we don't have to compare

// to both 'a' and 'A', 'e' and 'E', etc.

char ch2 = tolower(ch);

return ch2 == 'a' || ch2 == 'e' || ch2 == 'i' || ch2 == 'o' || ch2 == 'u';

}

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The program of the prompts is a user of the input that is a sequined to the characters and outputs of the number characters.

  • count_vowels.cpp
  • //functions declared
  • bool isVowel(char ch);
  • int main ()
  • {  string letters;
  • int num = 0;  int len;
  • cout<<"Enter a sequence of characters: ";
  •  getline(cin, letters);

Learn more about the that prompts the user to input a sequence.

brainly.com/question/13934372.

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