Counting Number of Vowels Program Plan: Include the required header files. Define the “main” function. Create a string object str and accept input in it. Create character array vowel with five vowels. Create integer array freq for frequency and count. Assign count to 0. Transform str to lower case. Use an outer loop to iterate through vowel array. Assign current freq to 0. Traverse through the str. Check if the current value of str is a vowel. If vowel then increment current freq and count. Display the total number of vowels in str. Display the frequency of each vowel using a loop.

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Chapter 21, Problem 21.17E

Program Plan Intro

Counting Number of Vowels

Program Plan:

Include the required header files.

Define the “main” function.

Create a string object str and accept input in it.

Create character array vowel with five vowels.

Create integer array freq for frequency and count.

Assign count to 0.

Transform str to lower case.

Use an outer loop to iterate through vowel array.

Assign current freq to 0.

Traverse through the str.

Check if the current value of str is a vowel.

If vowel then increment current freq and count.

Display the total number of vowels in str.

Display the frequency of each vowel using a loop.

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