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Chapter 2: Problem 20

A(n) ___________ is like a variable, but its value is read-only and cannot be changed during the program’s execution. A) secure variable B) uninitialized variable C) named constant D) locked variable

Short Answer

Expert verified
Answer: The term that defines a variable with a read-only value that cannot be modified during the program's execution is a named constant. Other options, such as secure variable, uninitialized variable, and locked variable, do not accurately describe this concept.

Step by step solution

01

Identify the correct term for a read-only variable

The correct term for a variable whose value stays constant and cannot be changed during the program's execution is a named constant.
02

Briefly describe the incorrect options

A) A secure variable might imply a variable with specific security measures or encryption, but it does not necessarily mean it has a constant value. B) An uninitialized variable just hasn't been assigned a value yet, which means it could still be changed or altered during the program's execution. D) A locked variable is not a common programming term, and could be misleading to describe a constant value.
03

Combine the correct term and explanations for other options

The correct answer is C) named constant. A named constant is a variable with a constant value that cannot be changed throughout the program's execution. In contrast, a secure variable (A) might have security measures, an uninitialized variable (B) hasn't been assigned a value, and a locked variable (D) is not a proper term to describe a constant value.

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Most popular questions from this chapter

Variable names may be up to 31 characters long.

Convert the following pseudocode to C++ code. Be sure to define the appropriate variables. Store 172.5 in the force variable. Store 27.5 in the area variable. Divide area by force and store the result in the pressure variable. Display the contents of the pressure variable.

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include iostream using namespace std; int… # There are a number of syntax errors in the following program. Locate as many as you can. */ What's wrong with this program? /* #include iostream using namespace std; int main(); } int a, b, c \\ Three integers a = 3 b = 4 c = a + b Cout < "The value of c is %d" < C; return 0; {
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