Find the Largest Among Three Numbers

AIM

To write a Python program that finds the largest among three numbers entered by the user.

ALGORITHM

1. Start
2. Take three numbers as input from the user
3. Compare the first number with the second and third numbers
4. If the first number is greater than both the second and third numbers, it is the largest
5. Otherwise, compare the second number with the third number
6. If the second number is greater than the third number, it is the largest
7. Otherwise, the third number is the largest
8. Display the largest number
9. Stop

PROGRAM

# Python program to find the largest among three numbers

#Write Any One Method
# Taking input from the user
num1 = float(input("Enter first number: "))
num2 = float(input("Enter second number: "))
num3 = float(input("Enter third number: "))

# Method 1: Using if-elif-else statements
if num1 >= num2 and num1 >= num3:
    largest = num1
elif num2 >= num1 and num2 >= num3:
    largest = num2
else:
    largest = num3

print("The largest number is:", largest)

# Method 2: Using built-in max() function
# largest = max(num1, num2, num3)
# print("The largest number using max() function is:", largest)

OUTPUT

CONCLUSION

Thus, the given program was successfully executed and the output was verified as per the expected result.

VIVA QUESTIONS

1. What is the purpose of this program?

   The purpose of this program is to find the largest among three numbers entered by the user.

2. What would happen if we input non-numeric values?

   If non-numeric values are entered, the program will raise a ValueError because the float() function cannot convert strings like "abc" to floating-point numbers.

3. How can we modify this program to find the smallest number?

   We can modify the program by changing the comparison operators from >= to <= or by using the min() function instead of max().

4. What is the advantage of using the max() function?

   The max() function provides a more concise and readable solution. It can also handle more than three numbers easily.

5. How would you modify this program to find the largest among four numbers?

   We would need to add another input for the fourth number and either extend the if-elif-else statements or simply add the fourth number to the max() function.