Procedure Call Explanation concat (str1, Returns a single string consisting of strl followed by str2. For example, concat ("key", "board") returns "keyboard". str2) Returns the first length characters of str or str if length is greater than the number of characters in str. For example, prefix("delivery", 3) returns del" and prefix("delivery", 100) returns "delivery". prefix(str, length) The variable initials is to be assigned a string consisting of the first letter of the string firstName followed by the first letter of the string lastName. Which of the following assigns the correct string to initials?

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3. Word Counter Write a function that accepts a pointer to a C-string as an argument and returns the number of words contained in the string. For instance, if the string argument is "Four score and seven years ago" the function should return the number 6. Demonstrate the function in a program that asks the user to input a string then passes it to the fune- tion. The number of words in the string should be displayed on the screen. Optional Exercise: Write an overloaded version of this function that accepts a string clás object as its argument.

C Program