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Chapter 2: Problem 11

include statement. D) All of the above # Every C++ program must have a A) cout statement. B) function main. C) #include statement. D) All of the above

Short Answer

Expert verified
A) cout statement B) function main C) #include statement D) All of the above Answer: B) function main Explanation: The main function serves as the starting point for any C++ program. Every C++ program must have a main function for the program to execute. While the cout statement and #include statement are commonly used in C++ programs, they are not strictly necessary for every program's execution.

Step by step solution

01

Understanding the Options

Before we can choose the right option, let's take a look at what each statement means: A) cout statement - This is from the standard output library in C++. It allows the program to display values onto the screen. B) function main - It is the starting point of any C++ program. Every C++ program must have a main function for the program to execute. C) #include statement - This statement is a preprocessor directive that tells the compiler to include a specific library, such as iostream or math, to allow the use of its associated functions and objects. D) All of the above - This option implies that every C++ program must have all three of the mentioned statements.
02

Consider the Main Function

The main function (Option B) is the starting point of any C++ program. Without the main function, the program will not execute. Therefore, every C++ program must have a main function.
03

Consider the Cout Statement

The cout statement (Option A) is used for displaying information on the screen. Although it is a commonly used statement in C++ programs, it is not strictly necessary for every program. A C++ program can execute without a cout statement.
04

Consider the #Include Statement

The #include statement (Option C) tells the compiler to include a specific library for the program to use its functions and objects. While it is common to use #include statements in C++ programs, it is possible to create a simple program that does not require external libraries. As such, the #include statement is not mandatory for every C++ program.
05

Selecting the Correct Option

Based on the above analysis, we can conclude that option B (function main) is the only necessary statement for every C++ program. Options A (cout statement) and C (#include statement) might be useful but they are not strictly necessary for the execution of a C++ program. Therefore, the correct answer is B) function main.

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Most popular questions from this chapter

How would each of the following numbers be represented in \(\mathrm{E}\) notation? A) \(3.287 \times 10^{6}\) B) \(-978.65 \times 10^{12}\) C) \(7.65491 \times 10^{-3}\) D) \(-58710.23 \times 10^{-4}\)

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