C Programming If-Else Statements

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Questions and Answers

What is the purpose of using the 'Else' keyword in an If...Then...Else statement?

  • To execute a statement if a condition is true
  • To select one of many blocks of code to execute
  • To execute a statement if a condition is not true (correct)
  • To end the If...Then...Else statement

What is the main difference between an If...Then...Else statement and an If...Then...ElseIf statement?

  • The ability to select one of many blocks of code to execute
  • The use of the 'Else' keyword
  • The use of the 'Then' keyword
  • The number of blocks of code that can be executed (correct)

What is the purpose of using a Select Case statement?

  • To execute a statement if a condition is not true
  • To end an If...Then...Else statement
  • To execute a statement if a condition is true
  • To select one of many blocks of code to execute (correct)

What is the syntax of an If...Then...Else statement when executing more than one statement if a condition is true?

<p>If condition Then statement1; statement2; ... End If (A)</p> Signup and view all the answers

What is the purpose of using an If...Then...Else statement?

<p>To execute different blocks of code based on a condition (A)</p> Signup and view all the answers

What is an alternative to using an If...Then...Else statement?

<p>Select Case statement (D)</p> Signup and view all the answers

What is the purpose of the IF statement in the Grade Checker Program?

<p>To check if the grade is passing or not (A)</p> Signup and view all the answers

What will be displayed if the user's grade is below 50 in the Grade Checker Program?

<p>Sorry, you did not pass. (C)</p> Signup and view all the answers

What is the condition for recommending light clothing in the Temperature Adviser Program?

<p>Temperature is 20 degrees Celsius or above (D)</p> Signup and view all the answers

What type of statement can be used to provide multiple alternatives based on different conditions?

<p>Select Case Statement (D)</p> Signup and view all the answers

What is the purpose of the ELSE clause in an If...Then...Else Statement?

<p>To specify an action if the condition is false (C)</p> Signup and view all the answers

What is the primary function of conditional statements in Visual Basic?

<p>To execute different sets of code based on certain conditions (D)</p> Signup and view all the answers

What is the syntax for an If...Then...Else Statement?

<p>IF condition THEN action ELSE alternative action (C)</p> Signup and view all the answers

Which of the following conditional statements is used to execute different sets of code based on multiple conditions?

<p>If...Then...Elself statement (D)</p> Signup and view all the answers

What is the purpose of the Else block in an If-Else statement?

<p>To execute code when the condition is false (C)</p> Signup and view all the answers

What is the syntax of an If-Else statement in VB?

<p>If condition Then code Else code End If (C)</p> Signup and view all the answers

What is the main difference between an If statement and an If-Else statement?

<p>The If statement is used for single conditions, while the If-Else statement is used for multiple conditions (B)</p> Signup and view all the answers

What is the purpose of the Select Case statement in VB?

<p>To execute different sets of code based on a single value (C)</p> Signup and view all the answers

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Study Notes

Conditional Statements

  • Conditional statements are used to perform different actions for different decisions.
  • They are used to execute different sets of code based on certain conditions.

Types of Conditional Statements

  • If statement
  • If...Then…..Else statement
  • If...Then...Elself statement
  • Select Case statement

If-Else Statement

  • A decision-making statement that decides whether to execute a part of the code based on a specified condition (test expression).
  • If the condition is true, the code inside the if block is executed.
  • If the condition is false, the code inside the else block is executed.

Syntax of If-Else

  • If (condition) { execute this code } else { execute this code }

Examples of If-Else Statements

  • Grade Checker Program: checks if a student's grade meets a passing requirement (50 or above).
  • Temperature Adviser: provides clothing recommendations based on the temperature input by the user.
  • Voter Classifier: (program objective not specified)

VBScript Conditional Statements

  • VBScript Conditional Statements are used to execute different sets of code based on certain conditions.
  • Objectives: explain VBScript Conditional Statements, identify different Conditional Statements in Visual Basic, and make an If-Else Statement.

If-Else Statement in VB

  • Example of a VB program to demonstrate the use of if-else statement.
  • Uses the syntax: If (condition) Then { execute this code } Else { execute this code }

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