This program is written in C
3. Write the function definition for a function called SearchVowels that takes one argument, a string called letters,
and returns an integer.
The function will first convert all the characters in the string to be uppercase. Then, print any vowels (uppercase)
that are in the string, along with the index of that character. Declare a variable called vcount that will be
incremented every time a vowel is encountered. Return vcount.