Beginner Exercises for "While" Statements in Python

1. Password Checker

Keep asking until user enters "admin123". Then print “Access Granted”.

2. Countdown from N

Ask for a number, then count down to 0.

3. Number Until Even

Keep asking the user for a number until they enter an even number.

4. Sum Until Negative

Keep asking for numbers. Add them. Stop when the user enters a negative number.

5. Guess the Secret Number

Secret number = 5. Keep asking for guesses until the user gets it right. Print how many attempts it took.

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✅ ANSWERS

1. Password Checker

password = ""
while password != "admin123":
    password = input("Enter password: ")
print("Access Granted")

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2. Countdown from N

num = int(input("Enter number: "))
while num >= 0:
    print(num)
    num -= 1

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3. Number Until Even

num = 1
while num % 2 != 0:
    num = int(input("Enter a number: "))
print("You entered an even number.")

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4. Sum Until Negative

total = 0
num = int(input("Enter a number: "))
while num >= 0:
    total += num
    num = int(input("Enter a number: "))
print("Total sum is", total)

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5. Guess the Secret Number

secret = 5
guess = -1
attempts = 0

while guess != secret:
    guess = int(input("Guess the number: "))
    attempts += 1
print("Correct! Attempts:", attempts)