Variables:

Variables hold a piece of information and that information gets changed during the execution of the program.

It is a symbolic name to represent a location in RAM (Random Access Memory).

Variables permit to store and access the data that are present in the computer’s RAM.

Example:

Consider the following variables “speed”, “distance”, and “time” which stores value that changes during the program execution...

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Chapter 1.5, Problem 1.20CP

Chapter 1.5, Problem 1.22CP

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Variables and constants must be declared before they can be used in a program. Why is it important to declare a variable? How are constants declared differently than variables? Please explain your answer in 3 sentences or more.

What use does it serve to be able to define an initial value when you can just assign a value to a variable?

What's the point of being able to define an initial value when you can simply assign a value to a variable?

Chapter 1 Solutions

STARTING OUT WITH C++FROM CONTROL STRU

Ch. 1.2 - Why is the computer used by so many different...Ch. 1.2 - List the five major hardware components of a...Ch. 1.2 - Internally, the CPU consists of what two units?Ch. 1.2 - Prob. 1.4CP Ch. 1.2 - Prob. 1.5CP Ch. 1.2 - Prob. 1.6CP Ch. 1.2 - Prob. 1.7CP Ch. 1.2 - Prob. 1.8CP Ch. 1.2 - What do you call a program that performs a...Ch. 1.2 - Word processing programs, spreadsheet programs,...

Ch. 1.3 - What is an algorithm?Ch. 1.3 - Why were computer programming languages invented?Ch. 1.3 - Prob. 1.13CP Ch. 1.3 - Prob. 1.14CP Ch. 1.3 - Prob. 1.15CP Ch. 1.3 - Prob. 1.16CP Ch. 1.3 - Prob. 1.17CP Ch. 1.5 - Prob. 1.18CP Ch. 1.5 - Prob. 1.19CP Ch. 1.5 - Describe the difference between a program line and...Ch. 1.5 - Prob. 1.21CP Ch. 1.5 - What happens to a variables current contents when...Ch. 1.5 - What must take place in a program before a...Ch. 1.5 - Prob. 1.24CP Ch. 1.7 - What four items should you identify when defining...Ch. 1.7 - Prob. 1.26CP Ch. 1.7 - What is a hierarchy chart?Ch. 1.7 - Prob. 1.28CP Ch. 1.7 - Describe what a compiler does with a programs...Ch. 1.7 - Prob. 1.30CP Ch. 1.7 - Is a syntax error (such as misspelling a key word)...Ch. 1.7 - What is the purpose of testing a program with...Ch. 1.7 - Briefly describe the difference between procedural...Ch. 1 - Prob. 1RQE Ch. 1 - What is the difference between system software and...Ch. 1 - Prob. 3RQE Ch. 1 - Why must programs written in a high-level language...Ch. 1 - Why is it easier to write a program in a...Ch. 1 - Prob. 6RQE Ch. 1 - Prob. 7RQE Ch. 1 - Prob. 8RQE Ch. 1 - The job of the ________ is to fetch instructions,...Ch. 1 - Internally, the CPU consists of the _______ and...Ch. 1 - Prob. 11RQE Ch. 1 - The two general categories of software are...Ch. 1 - A program is a set of _______.Ch. 1 - Prob. 14RQE Ch. 1 - _______ is the only language computers really...Ch. 1 - __________ languages are close to the level of...Ch. 1 - ________ languages are close to the level of the...Ch. 1 - Prob. 18RQE Ch. 1 - Words that have special meaning in a programming...Ch. 1 - Prob. 20RQE Ch. 1 - Prob. 21RQE Ch. 1 - __________ characters or symbols mark thebeginning...Ch. 1 - Prob. 23RQE Ch. 1 - Prob. 24RQE Ch. 1 - Prob. 25RQE Ch. 1 - Prob. 26RQE Ch. 1 - __________ is information a program gathers from...Ch. 1 - __________is information a program sends to the...Ch. 1 - Prob. 29RQE Ch. 1 - Available Credit The following steps should be...Ch. 1 - Sales Tax Design a hierarchy chart or flowchart...Ch. 1 - Account Balance Design a hierarchy chart or...Ch. 1 - The variable x starts with the value 0. The...Ch. 1 - The variable j starts with the value 10. The...Ch. 1 - The variable a starts with the value 1. The...Ch. 1 - Find the Error 36. The following pseudocode...

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