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C++ Functions and Recursion Test: Chapter 6

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C++ Functions and Recursion Test: Chapter 6

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Questions and Answers

Which of the following is true about functions?

Functions cannot be reused any number of times.

A function call must specify only the name of the function.

The implementation of a function is always visible to the caller.

Functions define specific tasks that can be used at many points in a program. (correct)

What can functions do?

Be used as building blocks to create new programs. (correct)

Return a result to the caller function.

Only be reused once.

Be used only within the same program.

Which expression returns the trigonometric sine of $x$?

$\text{trig_sin}(x)$

$\sin(x)$ (correct)

$\text{sine}(x)$

$\text{trig_sine}(x)$

Which of the following is not included in the math library functions?

<p>$\ln$</p> Signup and view all the answers

What does the function prototype 'double mySqrt(int x);' declare?

<p>Declares a function called mySqrt which takes an integer as an argument and returns a double.</p> Signup and view all the answers

Study Notes

Functions

Functions can be used to perform a specific task or set of tasks.
Functions can be reused throughout a program, making it more efficient and organized.

Math Library Functions

The math library includes functions to perform various mathematical operations, such as trigonometric functions.
The expression sin(x) returns the trigonometric sine of x.

Exclusions in Math Library Functions

sqrt function is not included in the math library functions by default, but it can be declared separately.

Function Prototypes

The function prototype double mySqrt(int x); declares a function named mySqrt that takes an integer x as an argument and returns a double value.

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Description

Test your knowledge of C++ functions and an introduction to recursion with this multiple-choice quiz based on the book 'C++ How to Program, 10/e, Global Edition'. This quiz covers program components in C++ and includes questions about function definitions, function calls, visibility of function definitions, and function implementation.