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The if…else Statement
When the condition is 'True' then the statements indented just below the if statement will be executed and if
the condition is 'False' then the statements indented just below the else statement will be executed. The else
statement is optional and there can be only one else statement in one if block. The syntax to use the if…
else statement is:
if (condition):
Statements for True
else:
Statements for False
Where,
• if and else are keywords.
• condition can be any relation or logical expression.
• statements are always indented and can be single or a block.
Program 5: To input two numbers and display the bigger of the two numbers.
Algorithm Flowchart
Step 1 Start START
Step 2 Input N1, N2
Step 3 if N1 is greater than N2 then
Display "N1 is bigger" Input N1, N2
Step 4 else
Display "N2 is bigger"
Step 5 Stop
Is No
N1>N2?
Source Code:
N1=int(input("Enter First Number:")) Display "N2 is bigger"
Yes
N2=int(input("Enter Second Number:"))
if N1>N2:
print(N1," is bigger ") Display "N1 is bigger"
else:
print(N2,"is bigger ")
Output:
STOP
Enter First Number:34
Enter Second Number:45
45 is bigger
Program 6: To input a number and display whether it is even or odd.
Algorithm
Step 1 Start
Step 2 Input Num
Introduction to Python 395

