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Chapter 6: Problem 21

Reference variables allow arguments to be passed by ____________.

Short Answer

Expert verified
Answer: Reference variables.

Step by step solution

01

Understand reference variables

Reference variables are variables that store the memory address of another variable. They are particularly useful when passing arguments to functions, allowing the function to operate on the original data instead of a copy.
02

Determine how reference variables allow passing arguments

When a reference variable is used to pass an argument, it allows the function to access and modify the original variable instead of a copy, thus saving memory and allowing any changes to persist outside the function. This method of passing arguments is called "pass by reference".
03

Complete the exercise

Based on our understanding of reference variables and their function in passing arguments, the correct term to fill the blank in the provided exercise is "reference". The completed exercise is: "Reference variables allow arguments to be passed by reference."

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Most popular questions from this chapter

A program contains the following function. int cube(int num) 1return num " num " num:1 Write a statement that passes the value 4 to this function and assigns its return value to the variable result.

Unless you explicitly initialize numeric global variables, they are automatically initialized to ____________.

When a function uses a mixture of parameters with and without default arguments, the parameters with default arguments must be defined ___________.

Give an example where an argument should be passed by reference.

Each of the following functions has errors. Locate as many errors as you can. A) void total(int valuel, value?, value3) B) double average(tnt valuel, tht value2, int value3) C) vold area (int length \(=30\), int width) D) void getValue( 1 nt values) E) \(1 /\) Overloaded functions
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