What is an if Statement?

The if statement is used to execute a block of code only when a specified condition is true.

If the condition is false, the block is skipped and the program continues normally.

Syntax:

if condition:
    # code to execute if condition is True

Example 1 (Condition True):

age = 18
if age >= 18:
    print("You are eligible to vote.")

Output:

You are eligible to vote.

Explanation:

  • Here, age is 18.
  • The if condition checks if age is 18 or more.
  • Since it is true, the message "You are eligible to vote." is printed.

Example 2 (Condition False):

marks = 30
if marks >= 40:
    print("You passed!")

Output:

(No output, as the condition is False)

Explanation:

  • Here, the value of marks is 30.
  • The if statement checks if marks are greater than or equal to 40.
  • Since 30 is less than 40, the condition is false.
  • Because the condition is false, the print statement does not run.
  • So, nothing is printed on the screen.

Important Notes:

  • Indentation is required in Python (usually 4 spaces).
  • Conditions are usually written using comparison operators.
  • If the condition is False, the block is ignored.

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