Factorial Program plan: Import the necessary package. Create a class “Factorial1” , Define the function “main()”, Declare and initialize the necessary variables. Create “Scanner” object to get the user input. Get the user input using “next()”. Execute “while” to check whether the entered input is negative. If t is a negative input, then ask the user for the next non-negative input. Check whether the value of “n” is “0”, Print the factorial value as “1” for “0”. Otherwise, check whether the value of “” is greater than or equal to “1”, If it “true”, execute the next statement inside “do”. Calculate the factorial. Increment the counter variable. Check the condition at the end of “do-while” statement. Print the factorial value.

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Chapter 4, Problem 29.1E

Program Plan Intro

Factorial

Program plan:

Import the necessary package.

Create a class “Factorial1” ,

Define the function “main()”,

Declare and initialize the necessary variables.

Create “Scanner” object to get the user input.

Get the user input using “next()”.

Execute “while” to check whether the entered input is negative.

If t is a negative input, then ask the user for the next non-negative input.

Check whether the value of “n” is “0”,

Print the factorial value as “1” for “0”.

Otherwise, check whether the value of “” is greater than or equal to “1”,

If it “true”, execute the next statement inside “do”.

Calculate the factorial.

Increment the counter variable.

Check the condition at the end of “do-while” statement.

Print the factorial value.

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