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.