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Welcome to my Online Shopping Program!

$1.$ Add item$$

$2.$ Remove item$$

$3.$ Modify item

$4.$ Print cart

$5.$ Checkout

What would you like to do$?1$

Name: toothbrush

Cost: $ $4\mathrm{.}53$

Quantity: $2$

$1.$ Add item$$

$2.$ Remove item$$

$3.$ Modify item

$4.$ Print cart

$5.$ Checkout

What would you like to do$?3$

#$$ Item$$ Price$$ Qty$$ Total Cost

$-----------------------------------------$

$1.$ toothbrush$$ $$4\mathrm{.}532$ $$9\mathrm{.}06$

Enter item to modify: $2$

Error. Enter valid item number: c

Error. Enter valid item number: $1$

Name: toothbrush

Cost: $ $4\mathrm{.}53$

Quantity: $1$

$1.$ Add item$$

$2.$ Remove item$$

$3.$ Modify item

$4.$ Print cart

$5.$ Checkout

What would you like to do$?1$

Name: soap

Cost: $ c

Invalid cost. Enter cost: $ cat

Invalid cost. Enter cost: $ $-3\mathrm{.}45$

Invalid cost. Enter cost: $ $0$

Quantity: c

Invalid quantity. Enter quantity: $0$

Invalid quantity. Enter quantity: $3\mathrm{.}45$

Invalid quantity. Enter quantity: $3$

$1.$ Add item$$

$2.$ Remove item$$

$3.$ Modify item

$4.$ Print cart

$5.$ Checkout

What would you like to do$?1$

Name: floss

Cost: $ $3\mathrm{.}00$

Quantity: $4$

$1.$ Add item$$

$2.$ Remove item$$

$3.$ Modify item

$4.$ Print cart

$5.$ Checkout

What would you like to do$?4$

#$$ Item$$ Price$$ Qty$$ Total Cost

$-----------------------------------------$

$1.$ toothbrush$$ $$4\mathrm{.}531$ $$4\mathrm{.}53$

$2.$ soap$$ $$03$ $$0\mathrm{.}00$

$3.$ floss $$ $$3\mathrm{.}004$ $$12\mathrm{.}00$

$1.$ Add item$$

$2.$ Remove item$$

$3.$ Modify item

$4.$ Print cart

$5.$ Checkout

What would you like to do$?2$

#$$ Item$$ Price$$ Qty$$ Total Cost

$-----------------------------------------$

$1.$ toothbrush$$ $$4\mathrm{.}531$ $$4\mathrm{.}53$

$2.$ soap$$ $$03$ $$0\mathrm{.}00$

$3.$ floss $$ $$3\mathrm{.}004$ $$12\mathrm{.}00$

Which item would you like to remove? $2$

$1.$ Add item$$

$2.$ Remove item$$

$3.$ Modify item

$4.$ Print cart

$5.$ Checkout

What would you like to do$?5$

Cart contents:

#$$ Item$$ Price$$ Qty$$ Total Cost

$-----------------------------------------$

$1.$ toothbrush$$ $$4\mathrm{.}531$ $$4\mathrm{.}53$

$2.$ floss $$ $$3\mathrm{.}004$ $$12\mathrm{.}00$

Please pay: $$16\mathrm{.}53$

Thank you for shopping with us$!$