Module 3: Control Structure - Selectors

Question 1

are used to control the flow of program execution by employing decision making, looping and branching, enabling your program to conditionally execute particular blocks of code

Answer 1

Control Structures

Question 2

depends on the supplied data values and the conditional logic specified

Answer 2

Program Execution Order

Question 3

Three Types of Control Statements

Answer 3

1. Conditional/Selector Statement
2. Iteration/Loop Statement
3. Jump Statement

Question 4

What are the conditional/selector statements?

Answer 4

• if statement
• if-else statement
• nested-if statement
• switch-case statement

Question 5

What are the iteration/loop statements?

Answer 5

• for statement
• while statement
• do-while statement

Question 6

What are the jump statements?

Answer 6

• break

- continue

Question 7

decide which statement to execute and when

Answer 7

Selection/Decision Making Statement

Question 8

Selection statements evaluate the _____ and control the program flow depending upon the result of the condition provided

Answer 8

Boolean expression

Question 9

Three Types of Selection Statements

Answer 9

1. Single Way Selection (if)
2. Two Way Selection (if-else)
3. Multiple Selection (nested if and switch-case)

Question 10

• It is a simple decision-making statement
• It is used to decide whether the statement or block of statements should be executed or not
• Block of statements will be executed if the given condition is true otherwise the block of the statement will be skipped

Answer 10

Single Way Selection (If Statement)

Question 11

Syntax for If Statement

Answer 11

Syntax:
if (condition) {
           stmt1;
           stmt2;
}

Question 12

is an extension to the if-statement, which uses another block of code, i.e., else block

Answer 12

If-Else Statement

Question 13

is executed if the condition of the if block is evaluated as false false

Answer 13

Else Block

Question 14

Syntax for If-Else Statement

Answer 14

Syntax:
if (condition) {
            stmt1;
            stmt2;
   }
else {
            stmt3;
            stmt4;
}

Question 15

contains the if-statement followed by multiple else-if statements

Answer 15

Nested-If/If-Else-If Statement

Question 16

It is the _____ that creates a decision tree where the program may enter in the block of code where the condition is true.

Answer 16

chain of if-else statements

Question 17

The last else statement will be executed if all if condition is _____

Answer 17

False

Question 18

Syntax for Nested-If/If-Else-If Statement

Answer 18

Syntax:
if (condition1) {
        stmt1;
        stmt2;
 }
 else if (condition2){
           stmt3;
           stmt4;
  }
  else if (condition3){
               stmt5;
               stmt6;
    }
    else {
                  stmt7;
                  stmt8;
       }

Question 19

are similar to if-else-if statements

Answer 19

Switch Statements

Question 20

The _____ contains multiple blocks of code called _____ and a single _____ is executed based on the variable which is being switched.

Answer 20

switch statement; cases; case

Question 21

The switch statement is easier to use instead of _____.

Answer 21

if-else-if statements

Question 22

Syntax for Switch Statement

Answer 22

Syntax:
switch () {
            case  : 
stmt1;
stmt2;
break;
            case  : stmt3;
stmt4;
break;
            case  : stmt5;
stmt6;
break;
            default: stmt7;
stmt8;
} // end switch

Question 23

set what variable needs to be tested based on its value

Answer 23

Switch (Variable)

Question 24

value tested base on the value of the variable indicated in switch

Answer 24

Case (Value)

Question 25

terminates the enclosing switch statement.

Answer 25

Break

Question 26

are necessary because without them, statements in switch blocks fall through

Answer 26

Break Statements

Question 27

this statement is performed if none of the case labels are true. It is similar to the last else of the nested-if statement.

Answer 27

Default

Question 28

is used when dealing with conditions whose value to be tested has a single value only.

Answer 28

Switch Statement

Question 29

Only ______ case body in the switch statement is executed

Answer 29

ONE

Question 30

used to test a range of values

Answer 30

Nested If

Question 31

used to test a constant value

Answer 31

Switch-case