Write a function called count_token(source, token) that takes two strings as input; a source and a token. The function should use a recursive process to count the number of times the token appears in the source string. You may assume the token is only a single character long.

Write a function called count_token(source, token) that takes two strings as input; a source and a token. The function should use a recursive process to count the number of times the token appears in the source string. You may assume the token is only a single character long.

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter15: Recursion

Section: Chapter Questions

Problem 12PE

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Concept explainers

Declaring and Defining the function

A set of statements, which performs a particular task is called a function. The program gains modularity by using function. The application is quite easy to understand, read, and edit when they are created with functions. The developer/programmer creates a function and uses main() to call the function. Once the function gets executed, the control is transferred to the main program.

Question

Problem 4 (Count Token)
Write a function called count_token(source, token) that takes two strings as input;
a source and a token. The function should use a recursive process to count the number
of times the token appears in the source string. You may assume the token is only a
single character long.
Sample run:
>> print(count_token('peter piper picked a peck of pickled peppers',
'p'))
9.
>>> print(count_token ("betty botter bought some butter", 'b’)
4
>>> print(count_token ("betty botter bought some butter", 't')
7

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