If-Else Statement in Programming
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If-Else Statement in Programming

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Questions and Answers

What will be executed if the condition in an if statement is true?

  • Both if and else blocks of code
  • None of the blocks of code
  • The else block of code
  • The if block of code (correct)

    • What does the if-else statement allow you to do?

  • Execute multiple if statements simultaneously
  • Execute a block of code only if a condition is false
  • Ignore conditions altogether
  • Perform different operations based on whether the condition is true or false (correct)

    • Which variant of the if statement is used for checking multiple conditions in sequence?

  • If else-if ladder (correct)
  • If-else statement
  • Nested if
  • If statement

    • What is the result when the following code checks an odd number: if(number%2==0)?

    <p>It will not print anything</p> Signup and view all the answers

    What is the primary function of nested if statements in C?

    <p>To check additional conditions within a primary condition</p> Signup and view all the answers

    What is the syntax for an if statement in C?

    <p>if (condition) { // code }</p> Signup and view all the answers

    Which of the following statements describes an if statement in C?

    <p>It can exist without any else statements</p> Signup and view all the answers

    In the provided code snippet, which output is generated when the user inputs 7?

    <p>7 is an odd integer.</p> Signup and view all the answers

    What will execute if 'var1' and 'var2' are equal in the provided program?

    <p>The message that var1 is equal to var2</p> Signup and view all the answers

    What happens if 'condition1' is false in an if-else-if ladder?

    <p>The statements in the first else-if block will be executed</p> Signup and view all the answers

    What does 'clrscr()' do in the given C program?

    <p>Clears the console screen</p> Signup and view all the answers

    In a nested if-else statement, what executes if 'condition1' is false and 'condition3' is false?

    <p>Statement 4</p> Signup and view all the answers

    How many else-if blocks can be included in an if-else-if ladder?

    <p>There can be no limit to else-if blocks</p> Signup and view all the answers

    What will be the output if marks are entered as 95 in the grade calculating program?

    <p>Grade A</p> Signup and view all the answers

    Which of the following correctly identifies a use of the if-else statement?

    <p>To execute code based on whether a condition is true or false</p> Signup and view all the answers

    What will the else block in a nested if-else structure do?

    <p>Execute when all other conditions are false</p> Signup and view all the answers

    Study Notes

    If-Else Statement

    • Used to execute code based on conditions
    • If the condition is true, the code within the if block is executed
    • If the condition is false, the code within the else block is executed

    Variants of If Statements

    • If Statement: Checks a condition; executes code only if true
    • If-Else Statement: Checks condition; executes code within if block if true and else block if false
    • If Else-If Ladder: Checks multiple conditions; executes code in first matching condition
    • Nested If: An if statement within another if statement, allows for more complex decision making

    Flowcharts

    • Visual representations of the logic used in if statements.
    • Help understand how code execution proceeds depending on conditions

    Example: If-Else with Number Check

    • Program requests user input for a number
    • Checks if the number is even using modulo operator (%)
    • Prints whether the number is "even" or "odd"

    If-Else Syntax

    • if (condition): Condition evaluated
    • { }: Code block to execute if condition is true
    • else: Code block to execute if condition is false

    Nested If-Else Syntax

    • if (condition1): Outer condition
    • { }: Code block to execute if condition1 is true
    • if (condition2): Inner condition within outer block
    • { }: Code block to execute if condition2 is true (and condition1)
    • else: Code block to execute if condition2 is false (condition1 is still true)

    Example: Nested If-Else with Number and Variable Comparison

    • The program takes two inputs
    • It checks if the first variable is different from the second
    • If it is different, it then compares the values
    • If it is equal, it prints that they are equal

    If Else-If Ladder Syntax

    • if (condition1): First condition
    • { }: Executed if condition1 is true
    • else if (condition2): Second condition
    • { }: Executed if condition1 is false and condition2 is true
    • ...: Additional else-if statements
    • else: Executed if all conditions are false

    Example: Grade Calculation with Else-If Ladder

    • Program takes student marks as input
    • Calculates grade based on different mark ranges
    • Prints grade based on calculated value
    • Uses multiple else-if to check different mark ranges

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    Related Documents

    C Programming Conditional Statements PDF

    Description

    This quiz covers the concept of if-else statements in programming, including various forms such as if statements, if-else statements, if-else-if ladders, and nested ifs. It also discusses flowcharts as a visual aid to understand the logic of conditional statements, along with practical examples like number checks. Test your knowledge of conditional programming techniques!

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