If-Else Statement in Programming

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

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

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

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

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

What is the syntax for an if statement in C?

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

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

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

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

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

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

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

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

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

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

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

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!