Lecture 6 - Pointers and Functions

Question 1

data type that “points” to another value stored in memory

Answer 1

Pointers

Question 2

marks the variable as a pointer

Answer 2

Asterisk

Question 3

returns the variable’s address

Answer 3

Reference Pointer (&)

Question 3

returns the value stored in a memory address

Answer 3

Dereference Pointer (*)

Question 4

a set of statements that take inputs, does a specific task or computation to produce a certain output.

Answer 4

Functions

Question 5

Built-in programs already available in C++, its functions are already available for use and will no longer require additional modification or programming.

Answer 5

Pre-Defined / Built-in

Question 6

Created and modified by the user or programmer. Functions defined by programmers to suit the specifications set.

Answer 6

User-Defined

Question 7

A built-in function in C++ by using header files or libraries where modification is not allowed

Answer 7

Pre-defined

Question 8

A variable declared within a block and not accessible outside of that block.

Answer 8

Local Variable

Question 8

How to declare functions?

Answer 8

dataType function_name (parameter list)

Question 9

the variables or inputs of a function

Answer 9

parameter list

Question 10

A variable declared outside of all the functions in a program and is accessible throughout the program.

Answer 10

Global Variable

Question 10

it creates the function and is divided into two sections

Answer 10

Function Definition

Question 11

defines the name of the function, the type of data to be returned, and the parameter list

Answer 11

Function Header

Question 11

Parts of a Function Definition

Answer 11

Function Header & Function Body

Question 12

defines the specific task to be carried out by the function. The whole function is enclosed using opening and closing
brackets

Answer 12

Function Body

Question 13

also called a function prototype. It resembles that of a function header but with a semicolon and used to show how a function should be called and is useful in instructing the main function that this specific user defined function is existing in the C++ program

Answer 13

Function Declaration

Question 14

is an expression which executes the function. If the function has
arguments, this needs input inside the parenthesis to do the particular task.

Answer 14

Function Call

Question 15

Functions which return one value to the user once it is called in the program. The return type of this type of function is the one also used in the function definition.

Answer 15

Value Returning Function

Question 16

The calling of a function requires data to be transferred forward and backwards, and if the parameter list in a function call is not empty, then data transfer will occur.

Answer 16

Exchange of Data

Question 16

Created and used just like value-returning functions except they do not return a value after the function executes. It performs a task, and then control returns back to the caller but it does not return a value.

Answer 16

Void Function

Question 16

passed to the function were copies of their values but never the variables themselves.

Answer 16

Pass by Value

Question 17

not passing a copy of its value, but we are somehow passing the variable itself to the function.

Answer 17

Pass by Reference

Question 17

A copy of value is passed to the
function

Answer 17

Call by Value

Question 17

An address of value is passed to
the function

Answer 17

Call by Reference

Question 18

specify more than one definition for a function name or an operator in the same scope

Answer 18

Function Overloading