challenges_45_51_whileloop.py

#045
# Set the total to 0 to start with. 
# While the total is 50 or less, ask the user to input a number. 
# Add that number to the total and print the message “The total is... [total]”. 
# Stop the loop when the total is over 50.
total=0

while total<=50:
    number=int(input("Enter a number: "))
    total=total+number
    print(f"Total is {total}.")
    
#046
# Ask the user to enter a number. 
# Keep asking until they enter a value over 5 and 
# then display the message “The last number you entered was a [number]” 
# and stop the program.
number=0
while number<=5:
    number=int(input("Enter a number: "))
print(f"The last number you entered was a {number}")

#047
# Ask the user to enter a number and then enter another number. 
# Add these two numbers together and then ask if they want to add another number. 
# If they enter “y", ask them to enter another number 
# and keep adding numbers until they do not answer “y”. 
# Once the loop has stopped, display the total.
number1=int(input("Enter a number: "))
number2=int(input("Enter another number: "))
add=number1+number2
print(f"The addition of these two numbers are {add}.")

ask=input("Do you want to add another number [y/n]?: ").lower()

while ask=="y":
    number3=int(input("Enter the number: "))
    add=add+number3
    ask=input("Do you want to add another number [y/n]?: ").lower()
print(f"The total is {add}.")
    
#048
# Ask for the name of somebody the user wants to invite to a party. 
# After this, display the message “[name] has now been invited” and add 1 to the count. 
# Then ask if they want to invite somebody else. 
# Keep repeating this until they no longer want to invite anyone else to the party and
# then display how many people they have coming to the party.
count=0
invite="y"
while invite=="y":
    name=input("What is the name of the person you want to invite to a party? ").lower()
    print(f"{name} has now been invited.")
    count+=1
    invite=input("Do you want to invite someone else [y/n]? ").lower()
print(f"{count} people are coming to the party.")

#049
# Create a variable called compnum and set the value to 50. 
# Ask the user to enter a number. 
# While their guess is not the same as the compnum value, 
# tell them if their guess is too low or too high and ask them to have another guess. 
# If they enter the same value as compnum, 
# display the message “Well done, you took [count] attempts”.
compnum=50
count=1
number=int(input("Enter a number: "))
while number!=compnum:
    count+=1
    if number>compnum:
        print("Your guess is too high.")
    elif number<compnum:
        print("Your guess is too low.")
    number=int(input("Enter a number: "))
print(f"Well done, you took {count} attempts.")

#050
# Ask the user to enter a number between 10 and 20. 
# If they enter a value under 10, display the message “Too low” and 
# ask them to try again. If they enter a value above 20, display the message “Too high” 
# and ask them to try again. 
# Keep repeating this until they enter a value that is between 10 and 20 
# and then display the message “Thank you”.
num=int(input("Enter a number between 10 and 20: "))

while num<10 or num>20:
    if num<10:
        print("Too low.")
    elif num>20:
        print("Too high.")
    num=int(input("Guess again: "))
print("Thank you.")

#051
# Using the song “10 green bottles”, 
# display the lines “There are [num] green bottles hanging on the wall, 
# [num] green bottles hanging on the wall, and if 1 green bottle should accidentally fall”. 
# Then ask the question “how many green bottles will be hanging on the wall?” 
# If the user answers correctly, 
# display the message “There will be [num] green bottles hanging on the wall”. 
# If they answer incorrectly,
# display the message “No, try again” until they get it right.
#When the number of green bottles gets down to 0, display the message 
#“There are no more green bottles hanging on the wall”.