Receipt Processing Program

For this bonus task, you will produce a program that asks a user for a receipt filename, reads the file, counts the number of items in the file, and reports their total price.

You can reuse a large amount of the code from the previous solution, but there is still one very tricky part to the task.

You will need to extract the price from each line in the file, as the item name and price are combined in a single string. You already have all of the tools in your toolbelt, but here are a couple of hints:

You'll need to find the dollar symbol to know where to perform slicing.

Prices will need to be converted to a float in order to be aggregated.

Example run $1$:

Enter receipt filename: receipt.txt

Rice $1$kg : $ $2\mathrm{.}99$

Pasta sauce $500$g : $ $3\mathrm{.}20$

Grass fed beef $2$kg : $$32\mathrm{.}99$

$3$ items

Total price : $$39\mathrm{.}18$

Example run $2$:

Enter receipt filename: abc.txt

Receipt file doesn't exist!