Chapter 7, Problem 42E

Explanation of Solution

Algorithm:

• Algorithm is a systematic plan to solve the problem or sub problem.
• It is a step-by-step method of solving a problem.
• Algorithm is a set of error free instructions to answer a problem or sub problem.
• It starts to solve the problem by obtaining the input.
• It is generally used for data processing, calculation and other associated computer and mathematical operations.

Example:

The example for recursion algorithm is given below:

Write "Enter the number:"        Display prompt message

Read number                         Read number from user

Set answer to FactFunct(number)    Call the function and assign the result to variable named answer

Write answer + "is the factorial of " +number     Display the value

FactFunct(number)