Write a python program to add numbers until user enters zero

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Write a program using while loop that asks the user for a number, and prints a countdown from that number to zero.

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Mar 26, 2018 ยท 1. I think a better approach that would solve your problem would be as following : input_str = input('(Enter \'0\' when complete.) Enter num: ')if (input_str.isdigit()): num = float(input_str)else: if (input_str == "done"): done() else: error() PL/SQL Program To Add Two Numbers. Since, we need variables in this program code so we need to declare them in the declaration section. In the begin section, we need to initialize and take input from the user. All the logical and mathematical calculations for this program logic need to be established here.

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It would be nice to have a program that keeps adding up numbers until you tell it to stop. Here is a program that does that. The user will enter numbers, one by one, and the program will add each number to SUM. The user tells the program to stop by entering a zero. The zero is how the user "signals" that the program should stop looping.

While loops are really useful because they let your program run until a user decides to quit the program. They set up an infinite loop that runs until the user does something to end the loop. This section also introduces the first way to get input from your program's users.