Conditional Statements in C++ Programming

Question 1

[ Identification ]

It evaluates TRUE or FALSE statement.

Answer 1

Boolean Expression

Question 2

[ Identification ]

• Developed by George Boole.
• A branch of discrete mathematics that is dedicated to the study of the properties and the manipulation of logical expressions.
• Uses relational operators to compare expressions.

Answer 2

Boolean Algebra

Question 3

[ Identification ]

He developed Boolean Algebra.

Answer 3

George Boole

Question 4

[ Identification ]

Used to compare the value of two variables.

Answer 4

Relational Operators

Question 5

[ Identify / illustrate the operator being described. ]

Used when the value of two variables are equal.

Answer 5

==

Question 6

[ Identify / illustrate the operator being described. ]

Used when the value of two variables are not equal.

Answer 6

!=

Question 7

[ Identify / illustrate the operator being described. ]

Used when one value is greater than another.

Answer 7

>

Question 8

[ Identify / illustrate the operator being described. ]

Used when one value is greater than or equal to another.

Answer 8

> =

Question 9

[ Identify / illustrate the operator being described. ]

Used when one value is less than another.

Answer 9

<

Question 10

[ Identify / illustrate the operator being described. ]

Used when one value is less than or equal to another.

Answer 10

<=

Question 11

[ Identification ]

• Also known as selection statements
• Used to make decisions based on a given condition.

Answer 11

Conditional Statements

Question 12

[ True or False ]

If the condition evaluates to TRUE, a set of statements is executed, otherwise another set of statements is executed.

Answer 12

True

Question 13

Conditional statements are also known as _______ ________.

Answer 13

selection statements

Question 14

[ What are these? ]

• Simple IF Statement
• IF - ELSE Statement
• NESTED IF Statement
• SWITCH Statement

Answer 14

Forms of Conditional Statement

Question 15

[ Identification: Forms of Conditional Statement ]

• A powerful statement for decision making and is used to control the flow of execution of statements.
• A two-way decision-making statement and is used in conjunction with an expression.

Answer 15

Simple IF Statement

Question 16

[ Identification: Forms of Conditional Statement ]

STRUCTURE:
if(condition)
{ statement; }

Example:
if(x==100)
{
cout«“x is 100”;
}

Answer 16

Simple IF Statement

Question 17

[ Fill in the blanks. ]

An __ ______ can be followed by an optional ____ _______, which executes when the Boolean expression is false.

Answer 17

An if statement can be followed by an optional else statement, which executed when the Boolean expression is false.

Question 18

[ True or False ]

If the Boolean expression evaluates to true, then the else block will be executed, otherwise, the if block will be executed.

Answer 18

False.

If the Boolean expression evaluates to true, then the if block will be executed, otherwise, the else block will be executed.

Question 19

[ Identification: Forms of Conditional Statement ]

• An if statement can be followed by an optional else statement, which executes when the Boolean expression is false.

Answer 19

IF - ELSE Statement

Question 20

[ Identification: Forms of Conditional Statement ]

STRUCTURE:
if(condition)
{
statement 1;
}
else
{
statement 2;
}

Example:
if(Grade>=75)
{
cout«“Congratulations, You Passed!”;
}
else
{
cout«“You failed, better luck next time!”;
}

Answer 20

IF - ELSE Statement

Question 21

[ Identification: Forms of Conditional Statement ]

• Use one if or else if statement inside another if or else if statement(s).

Answer 21

NESTED IF - ELSE Statement

Question 22

[ Identification: Forms of Conditional Statement ]

STRUCTURE:
if(condition)
{
if(condition 1)
{ statement 1; }
else
{ statement 2; }
}
else
{ statement 3; }

Example:
int ctr = 0;
int Password;
if(Password==”JRUat100”)
{
cout«“Login Succesfully!};
}
else
{
cout«“Login Failed!”;
ctr++;
if (ctr==3){
cout«“Pease Try again later!”; }
}

Answer 22

NESTED IF - ELSE Statement

Question 23

[ Identification: Forms of Conditional Statement ]

• Allows a variable to be tested for equality against a list of values.
• Used when you have multiple possibilities for the if statement.

Answer 23

SWITCH Statement

Question 24

[ Identification: Forms of Conditional Statement ]

STRUCTURE:
switch(variable)
{
case 1:
//execute your code
break;

case n:
//execute your code
break;

default:
//execute your code
}

Example:
int num = 2;
cout«“Pls enter number”;
cin»num;
switch(num) {

case 1:
cout«“You selected 1.”;
break;
case 2:
cout«“You selected 2.”;
break;
default:
cout«“Pls select a number from 1-2”;
}

Answer 24

SWITCH / SWITCH CASE Statement

Question 25

[ Fill in the blanks: Rules in Switch Statement ]

The expression used in a switch statement must have an ______ or enumerated type or a class type in which the class has a single conversion function to an ______ or enumerated type.

Answer 25

integral

Question 26

[ Fill in the blanks: Rules in Switch Statement ]

You can have any number of _____ ______ within a switch. Each case is followed by the value to be compared to and a colon.

Answer 26

case statements

Question 27

[ Fill in the blanks: Rules in Switch Statement ]

When a _____ statement is reached, the switch terminates, and the flow of control jumps to the next line following the switch statement.

Answer 27

break

Question 28

[ Fill in the blanks: Rules in Switch Statement ]

A switch statement can have an optional ______ case, which must appear at the end of the switch. The _____ case can be used for performing a task when none of the cases is true. No _____ is needed in the ____ case.

Answer 28

A switch statement can have an optional default case, which must appear at the end of the switch. The default case can be used for performing a task when none of the cases is true. No break is needed in the default case.

Question 29

[ Identification ]

Used to perform logical operations on the given two variables.

Answer 29

Logical Operators

Question 30

[ Identify / illustrate the operator being described. ]

Executes TRUE statement if all conditions are TRUE.

Answer 30

&& - AND

Question 31

[ Identify / illustrate the operator being described. ]

Executes TRUE statement if either of the conditions is TRUE.

Answer 31

|| - OR

Question 32

[ Identify / illustrate the operator being described. ]

Executes TRUE statement if the condition is FALSE.

Executes FALSE statement if the condition is TRUE.

Answer 32

! - NOT