Write a program that runs like a cashier in a store. The program should use a while loop and prompt for the quantity and unit price of each item being purchased. The number of different items cannot be known in advance so the loop should continue until zero is entered for the quantity. A subtotal should be printed after each item's data has been rung up. See Sample Output. When the loop ends the program should report the number of different itemspurchased and the total amount due. SAMPLE OUTPUT: Enter item quantity or zero to quit 2 Enter unit price of item 2.50 Subtotal is $5.00 Enter item quantity or zero to quit 1 Enter unit price of item 7.99 Subtotal is $7.99 Enter item quantity or zero to quit 3 Enter unit price of item 2.39 Subtotal is $7.17 Enter item quantity or zero to quit 0 You purchased 3 different items Please pay $20.16
Types of Loop
Loops are the elements of programming in which a part of code is repeated a particular number of times. Loop executes the series of statements many times till the conditional statement becomes false.
Loops
Any task which is repeated more than one time is called a loop. Basically, loops can be divided into three types as while, do-while and for loop. There are so many programming languages like C, C++, JAVA, PYTHON, and many more where looping statements can be used for repetitive execution.
While Loop
Loop is a feature in the programming language. It helps us to execute a set of instructions regularly. The block of code executes until some conditions provided within that Loop are true.
python
Write a
SAMPLE OUTPUT:
Enter item quantity or zero to quit 2
Enter unit price of item 2.50
Subtotal is $5.00
Enter item quantity or zero to quit 1
Enter unit price of item 7.99
Subtotal is $7.99
Enter item quantity or zero to quit 3
Enter unit price of item 2.39
Subtotal is $7.17
Enter item quantity or zero to quit 0
You purchased 3 different items
Please pay $20.16
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