Wyo C++                                                                                                                 Name -
Ch. 9 Wksht #7

Write a function that accepts a string variable and returns the number of vowels contained in the string.

Write out the complete function definition below following the function header provided.

int countVowels(apstring stringIn)
// precondition:   stringIn is a string variable consisting of one or more lowercase letters
// postcondition:  returns the number of vowels in stringIn where a, e, i, o, and u are considered vowels