<h2>Solution :</h2>
The given problem is solved in Python.
def ComputeSquare():
side = float(input('Enter the side of the square: '))
if side > 0:
perimeter = 4 * side
area = side * side
print('Perimeter of the square is:',
perimeter, 'unit.')
print('Area of the square is:', area, 'square unit.')
<h3> else:</h3>print('Invalid input.')
ComputeSquare()
<h2>Explanation :-</h2>- In this program, we create a function ComputeSquare() to calculate the perimeter and area of a square.
- The function asks the user to enter the side of the square. The side is then stored in a variable.
- Now, we check whether the side is greater than 0 or not using if-else statement.
- If the condition is true, the perimeter and area is calculated which is displayed using print() statement.
- If the condition is false, the else blocks executes printing the error message.