# Function Points

Is used to express the amount of functionality in a software system, as seen by the user. A higher number of function points indicates more functionality. Typically used to:

* Estimate the cost and effort required to design, code and test a software system.
* Predict the number of errors
* Predict the number of components
* Measure productivity

  Function Points are computed from the Software Requirements Specification (SRS)

## Advantages of function points

* Measure the size of the solution instead of the size of the problem
* Requirements are the only thing needed for function points count
* Can be estimated early in analysis and design
* Is independant of technology
* Is independant of programming languages

## Disadvantages of function points

* A well defined requirements specification is necessary
* Gaining proficency is not easy, the learning curve is quite long
* Could be quite time-consuming this could be costly