Write a program in C that reads in an input string from the user and performs the following tasks using a series of function calls:

1) Search through the string for a specific character. If found, return the number of matches encountered. If not found, return a zero.

2) Print the string in reverse.

3) Attempt to convert the string to a floating point number. If a number is obtained, return that value. If no number is obtained, return a default result of your choice.

4) Delete the string recursively. Explain how this algorithm works in your write-up.

What information is required in order to pass an array into a function? What information is required in order to have the function "return" the updated array?