Software engineering Question:

Software Requirements are Descriptions and specifications of a system–A requirementis a condition or capability to which the system must conform and Define. A system is designed with certain functionality in mind and to ome up with that functionality and its specification right at the beginning is Requirement Engineering. Requirements Engineering–Eliciting, organizing, and documenting the requirements of the system–The process of establishing the services that the customer requires from a system and the constraints under which it operates and is developed Software requirements should be •Clear
•complete
•Unambiguous
•Quantitative