Here are a few examples of Python programs that use conditional statements to demonstrate different concepts:
Example 1: Check if a number is positive, negative, or zero.
# Program to check if a number is positive, negative, or zero
num = float(input(“Enter a number: “))
if num > 0:
print(“The number is positive.”)
elif num == 0:
print(“The number is zero.”)
else:
print(“The number is negative.”)
Example 2: Check if a number is even or odd
# Program to check if a number is even or odd
num = int(input(“Enter an integer: “))
if num % 2 == 0:
print(f”{num} is even.”)
else:
print(f”{num} is odd.”)
Example 3: Find the largest of three numbers
# Program to find the largest of three numbers
num1 = float(input(“Enter first number: “))
num2 = float(input(“Enter second number: “))
num3 = float(input(“Enter third number: “))
if (num1 >= num2) and (num1 >= num3):
largest = num1
elif (num2 >= num1) and (num2 >= num3):
largest = num2
else:
largest = num3
print(f”The largest number is {largest}.”)
Example 4: Check if a year is a leap year
# Program to check if a year is a leap year
year = int(input(“Enter a year: “))
if (year % 4 == 0):
if (year % 100 != 0 or year % 400 == 0):
print(f”{year} is a leap year.”)
else:
print(f”{year} is not a leap year.”)
else:
print(f”{year} is not a leap year.”)
Example 5: Simple calculator using conditional statements
# Simple calculator using conditional statements
num1 = float(input(“Enter first number: “))
num2 = float(input(“Enter second number: “))
print(“Select operation:”)
print(“1. Add”)
print(“2. Subtract”)
print(“3. Multiply”)
print(“4. Divide”)
choice = input(“Enter choice (1/2/3/4): “)
if choice == ‘1’:
print(f”The result is {num1 + num2}”)
elif choice == ‘2’:
print(f”The result is {num1 – num2}”)
elif choice == ‘3’:
print(f”The result is {num1 * num2}”)
elif choice == ‘4’:
if num2 != 0:
print(f”The result is {num1 / num2}”)
else:
print(“Error! Division by zero.”)
else:
print(“Invalid input”)
These examples cover a range of basic conditional operations and should give you a good starting point for understanding how to use conditional statements in Python.
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