Python Programs: Arithmetic Operations & Number Handling

Posted on Feb 25, 2025 in Computers

Program to Find the Average of Three Numbers

This program calculates the average of three numbers entered by the user:

number1 = int(input("Please enter the first number: "))
number2 = int(input("Please enter the second number: "))
number3 = int(input("Please enter the third number: "))
result = (number1 + number2 + number3) / 3
print("The average of the three numbers is:", result)

Output:

Please enter the first number: 100
Please enter the second number: 70
Please enter the third number: 80
The average of the three numbers is: 83.33333333333333

Program to Find the Larger of Two Numbers

This program takes two numbers as input and displays the larger number:

no1 = int(input("Enter the first number: "))
no2 = int(input("Enter the second number: "))
if no1 > no2:
    print(no1, "is larger than", no2)
elif no1 == no2:
    print(no1, "is equal to", no2)
else:
    print(no2, "is larger than", no1)

Output:

Enter the first number: 12
Enter the second number: 67
67 is larger than 12

Program to Find the Largest of Three Numbers

This program takes three numbers as input and displays the largest number:

n1 = int(input("Enter the first number: "))
n2 = int(input("Enter the second number: "))
n3 = int(input("Enter the third number: "))
if n1 > n2 and n1 > n3:
    print(n1, "is largest")
elif n2 > n1 and n2 > n3:
    print(n2, "is largest")
elif n2 == n1 and n3 == n1:
    print("All given numbers are equal")
else:
    print(n3, "is largest")

Output:

Enter the first number: 15
Enter the second number: 32
Enter the third number: 7
32 is largest

Program to Calculate Area or Perimeter of a Circle

This program calculates either the area or the perimeter of a circle based on user choice:

r = float(input("Enter the radius: "))
print("1. Area of the Circle")
print("2. Perimeter of the Circle")
op = int(input("Choose your Option: "))
if op == 1:
    a = 3.14 * r * r
    print("Area of the Circle with radius", r, "is", a)
elif op == 2:
    p = 2 * 3.14 * r
    print("Perimeter of the Circle with radius", r, "is", p)
else:
    print("Wrong Option")

Output:

Enter the radius: 25
1. Area of the Circle
2. Perimeter of the Circle
Choose your Option: 1
Area of the Circle with radius 25.0 is 1962.5

Simple Calculator Program

This program creates a simple calculator that performs four basic arithmetic operations:

n1 = int(input("Enter the first number: "))
n2 = int(input("Enter the second number: "))
op = input("Choose the operator (+, -, *, **, /, //, %): ")
if op == "+":
    res = n1 + n2
elif op == "-":
    res = n1 - n2
elif op == "*":
    res = n1 * n2
elif op == "**":
    res = n1 ** n2
elif op == "/":
    if n2 == 0:
        res = "Division By Zero"
    else:
        res = n1 / n2
elif op == "//":
    if n2 == 0:
        res = "Division By Zero"
    else:
        res = n1 // n2
elif op == "%":
    res = n1 % n2
else:
    print("Wrong Option")
print("The result of", n1, op, n2, "=", res)

Output:

Enter the first number: 25
Enter the second number: 5
Choose the operator (+, -, *, **, /, //, %): **
The result of 25 ** 5 = 9765625

Program to Sort Three Numbers in Ascending Order

This program reads three integers and prints them in ascending order:

num1 = int(input("Enter First number: "))
num2 = int(input("Enter Second number: "))
num3 = int(input("Enter Third number: "))
if num1 < num2 and num1 < num3:
    if num2 < num3:
        x, y, z = num1, num2, num3
    else:
        x, y, z = num1, num3, num2
elif num2 < num1 and num2 < num3:
    if num1 < num3:
        x, y, z = num2, num1, num3
    else:
        x, y, z = num2, num3, num1
else:
    if num1 < num2:
        x, y, z = num3, num1, num2
    else:
        x, y, z = num3, num2, num1
print("Numbers in ascending order are:", x, y, z)

Output:

Enter First number: 24
Enter Second number: 12
Enter Third number: 65
Numbers in ascending order are: 12 24 65

Program to Calculate Sum of Even and Odd Integers

This program calculates and prints the sums of even and odd integers up to a given limit:

limit = int(input("Please enter the limit: "))
even_Sum = 0
odd_Sum = 0
for num in range(1, limit + 1):
    if num % 2 == 0:
        even_Sum = even_Sum + num
    else:
        odd_Sum = odd_Sum + num
print("The sum of Even numbers from 1 to", limit, "is", even_Sum)
print("The sum of Odd numbers from 1 to", limit, "is", odd_Sum)

Output:

Please enter the limit: 6
The sum of Even numbers from 1 to 6 is 12
The sum of Odd numbers from 1 to 6 is 9