Exercise 1.
product = 1
num = input('Enter first number:')
while int(num)!= 0:
num= input('enter new number')
product = product * int(num)
print('product = ', product)
The above program is meant to multiply series of integers input by the user until a 0 is entered. For example if the user introduces 10, later 12, and finally 0, the program should output 10x12 = 120.
Find the error and rewrite the program so that it gets the desired output. Also, explain exactly (only a few words are needed) why the code, as given above, is incorrect.
Exercise 2.
The following code should print the integers from 0 to 9. Find the error and correct it:
num = 0
while n < 10:
print n
n = n + 1
Exercise 3.
Write a program that prompts the user for his/her age and depending on this input age it will print one of the following messages:
Between 0 and 20 years: "You are too young".
Between 21 and 40 years: "You are middle-aged".
41 years and above: "You are old".
Exercise 4.
Write a program that prompts to the user for a integer number, but if the input entered is not integer (e.g., the user inputs a string), keeps asking until the user introduces an integer.Please enter an integer: 'Hello World' Error, please try again. Please enter an integer: 5.15 Error, please try again. Please enter an integer: 5 Success! 5 is an integer number
Exercise 5.
Factors of an integer number X are those integer numbers that multiplied together give as a result X. Write a program that prompts the user for a number and prints all its positive factors.
Example:
Input: 24 Output: 1, 2, 3, 4, 6, 8, 12, 24
Note that the numbers above are factors of 24 because 1x24 = 24, 2x12 = 24, 3x8 = 24, 4x6 = 24.
Exercise 6.
Write a program that prompts the user for an number n and outputs the sum from 1 to n.
Input: 7. Output: 28.
Exercise 7.
Write a program that prompts the user for integers until 0 is entered. The program should output the number of positive values entered, as well as the number of negatives.
Example
Input: 1, 2, -5, -7, -9, 4, -1, 0. Output: Positive integers = 3. Negative integers = 4.
Exercise 8.
Write a program containing a pair of nested loops that displays the integer values 1-25, 5 numbers per row, with the columns aligned as showed below:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25