Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Counting using while loops-Python
(Using Pycharm Community edition)
Ask the user for 3 inputs.  Tell them NOT to use ZERO
1) the user inputs the a STARTING number
"User, what is the starting number of the range?" -- they enter 1
2) the user inputs an ENDING number for the loop. 
User, what is the ending number of the range?" --- they enter 10
3) the user inputs the  INCREMENT for the counter (increments of 1, 3, 4, 6, etc).  
User, what is the increment of the range?" --- they enter 2

(Go back and look at the previous work on RANGE)
 
Using inputs, you will create FOUR while loops.  Each loop will look similar in style to this :
 
while a <= ?:
    print (a)
    a = a + ?
 
Loop 1 and Loop 2 will use addition and multiplication to increase the count
Loop 3 and Loop 4 will use subtraction and division to decrease the count
 
Use the Starting number and Ending number and increments for ADDING / SUBTRACTING
Reverse the Starting number and the Ending number for SUBTRACTION / DIVISION

Example:
What is your starting number? 1
What is your ending number? 10
What is the increment you are going by? 2
 
addition and multiplication - starting number and ending number
ADDITION a = a + 2    |    MULTIPLICATION a = a * 2
 
subtraction and division - reverse
The ENDING number MUST BE the STARTING number.
The STARTING number MUST be the ENDING number. 
SUBTRACTION   a = a - 2   |     DIVISION    a = a / 2
 
IDEA : you could set each counter to be a different letter...
a = 0 , b = 0, c = 0, d = 0.
 
Disclaimer - some of the operations do not have to work depending on when numbers are inputted for the start, end and increment
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