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Output:
The result of 10 + 20 is: 30

Conditional Statements
Conditional statement, also referred to as a selection statement, decision-making statement or branching statement,
are used to control the flow of execution based on certain conditions. Conditional statements in Python allow you to
execute certain blocks of code based on specific conditions.
In Python, there are various types of conditional statements, which are as follows:
if statement
if...else statement
if…elif…else statement
if
Nested if statement False
Condition
The if Statement
The if statement is the simplest conditional statement. Here, a statement or a collection
True
of statements within the if block are executed only if a certain condition or expression
Execute
evaluates to True. If the condition evaluates to False, then the control of execution is
Statement block
passed to the next statement after the if block.
The syntax of the if statement is as follows:
Execute statement
if (Test Expression):
outside if block
Statement block
Program 14: To demonstrate the use of the if statement

x = 10
if x > 5:
print(x,"is greater than 5")
Output:
10 is greater than 5
The if-else Statement if True

The if-else statement executes different blocks of code based on whether a condition
condition is true or false. If the condition evaluates to True, the code block
associated with the if statement is executed. If the condition evaluates to False Execute statement
inside if block
False, the code block associated with the else statement is executed.
Execute statement
The syntax of the if-else statement is as follows:
inside else block
if (Test Expression):
Statement block
Execute statement
else:
outside if...else block
Statement block
Program 15: To demonstrate the use of the if-else statement

# Asking the user for input
temperature = float(input("Please enter the temperature in Celsius: "))
# Checking if the temperature is above or below freezing point
if temperature <= 0:
print("It's freezing!")

Basic Concepts of Artificial Intelligence 71