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Syntax of the if … else … statement: Start

if (condition):

Statement block 1 Input Age
else:

Statement block 2 False
Note that both statement blocks 1 and 2 are Is Age>18?
indented. Block 1 is under if, so it will be executed
True
if the condition mentioned is True. Block 2 is under Print ‘Not Eligible’
else, so it will be executed if the condition is False. Print ‘Eligible’

Here, if the age of the user is more than 18, ‘Eligible’
will be printed, otherwise ‘Not Eligible’ will be Stop
printed.

Program 3. To show a message if the user is ‘Eligible’ or ‘Not Eligible’ to cast a vote.
Program3.py

File Edit Format Run Options Window Help
age=int(input("Enter Age: "))
if ( age>=18):
print("You are eligible to cast a vote.")
else:
print("You are not eligible to cast a vote.")

Output

Enter Age: 25
You are eligible to cast a vote.

Enter Age: 15
You are not eligible to cast a vote.

Program 4. To check whether a number is odd or even.

Program4.py
File Edit Format Run Options Window Help

Num=int(input("Enter a Number: "))
if Num%2==0:
print("Number entered is an even number.")
else:
print("Number entered is an odd number.")

Flow of Control in Python 111