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Chapter 1: Problem 18

A variable must be __________ before it can be used in a program.

Short Answer

Expert verified
Answer: Initialization

Step by step solution

01

Identify the concept related to variable usage

Before a variable can be used in a program, it has to go through a specific process which is crucial to avoid errors or unexpected results in the program while it executes.
02

Recall the process that a variable must undergo before it can be used

The process that a variable must go through is called "initialization". Initialization means assigning an initial value to a variable, before using it in the program.
03

Complete the exercise by filling in the blank with the correct answer

Given the explanation of the concept in the previous steps, we can now complete the statement given in the exercise: "A variable must be __initialized__ before it can be used in a program."

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Most popular questions from this chapter

since computers can't be programmed in natural human language, algorithms must be written in a(n) _____ language.

Available Credit Design a hierarchy chart for a program that calculates a customer’s available credit. The program should carry out the following steps: 1\. Display the message “Enter the customer’s maximum credit.” 2\. Wait for the user to enter the customer’s maximum credit. 3\. Display the message “Enter the amount of credit used by the customer.” 4\. Wait for the user to enter the customer’s credit used. 5\. Subtract the used credit from the maximum credit to get the customer’s available credit. 6\. Display a message that shows the customer’s available credit.

What is the difference between a syntax error and a logical error?

The variable a starts with the value 1. The variable b starts with the value 10. The variable c starts with the value 100. The variable x starts with the value 0. Store the value of c times 3 in x. Add the value of b times 6 to the value already in x. Add the value of a times 5 to the value already in x. Display the value in x on the screen.

_________ is the only language computers really process.
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