I need an invoice in c++

General information for the business: Non profesional work
Kind of development: New program from scratch
Num. of modules: 1
Description of every module: I need an invoice with the following rows


Quantity Description unitary price Tprice
(enter Quantity) (enter description) (enter unitary price) (the multiplication of quantity * price)

i need 10 rows to enter this concepts

after this i need it to sum all the Tprices
i need to display the tax (16%) of the sum of the Tprices
And the final price making the sum of tax +all totals
Description of requirements/functionality: I need an invoice with the following rows


Quantity Description unitary price Tprice
(enter Quantity) (enter description) (enter unitary price) (the multiplication of quantity * price)

i need 10 rows to enter this concepts

after this i need it to sum all the Tprices
i need to display the tax (16%) of the sum of the Tprices
And the final price making the sum of tax +all totals
CMS and Admin requirements: I need an invoice with the following rows


Quantity Description unitary price Tprice
(enter Quantity) (enter description) (enter unitary price) (the multiplication of quantity * price)

i need 10 rows to enter this concepts

after this i need it to sum all the Tprices
i need to display the tax (16%) of the sum of the Tprices
And the final price making the sum of tax +all totals
Specific technologies required: c, c++ or pascal
OS requirements: Windows
Extra notes: