Page 493 - ComputerScience_Class_11

Syntax:
Start
if condition :

block of code if true
Working of if Statement if(condition)? true
The working of if statement is as follows:
Statement
1. When the program reaches the if statement, it evaluates the false
condition.

2. If the condition is True, the indented code block following the if
statement is executed. Stop
3. If the condition is False, the indented block is skipped and the
program continues with the next part of the code.

Program 2: Write a program to check if a number entered by the user is greater than 10 and also check if a number
is even.

Program 2.py

File Edit Format Run Options Window Help

x = int(input("Enter a number: "))
if x > 10:
print("x is greater than 10")
if x % 2 == 0:
print("x is even")

Output

Enter a number: 12
x is greater than 10
x is even

The if-else Statement
The if-else statement is one of the most commonly used control structures in programming. It allows the program to
make decisions based on a condition. The program checks if a condition is True or False and executes one of two blocks
of code accordingly.

This type of control flow is essential for enabling decision-making within a program.

Syntax:
if condition :
block of code if true
else:
block of code if false

Flow of Control 491