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Write software requirement specification #3

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Software Requirement Specification (SRS) for Laboratory Work: Program for Solving Systems of Equations

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Software Requirements Specification (SRS) for Formula Calculation Program

  1. Purpose This SRS document specifies the requirements for a Formula Calculation Program implemented in C++. It defines the functionality, system interactions, user interactions, and constraints for a program that takes user-defined values, performs mathematical calculations based on these inputs, and outputs results in a command-line interface (CLI). a. Definitions • Formula Calculation Program: A command-line application to calculate results based on user inputs x and n using different formulas depending on the value of x. • Input Validation: The program ensures all user inputs meet specified requirements before proceeding with calculations. • CLI: Command-Line Interface for user input and output display. • Iterations: Repeated calculations based on user-defined steps between upper and lower bounds. b. System Overview The Formula Calculation Program is a CLI application that:
  2. Prompts users for input values.
  3. Validates those inputs.
  4. Performs a specific calculation depending on the values provided.
  5. Outputs the results for each iteration across a defined range. c. References • C++ Standard Library: Used for input/output operations and mathematical calculations. • Documentation on Command-Line Interface (CLI): Provides user interaction guidelines. • Mathematical Functions in C++: For using functions like pow and other mathematical operations.
  6. Overall Description a. Product Perspective This program is a stand-alone, non-networked application built to operate independently in any compatible CLI environment. It uses modular functions for input handling, validation, calculation, and output. i. System Interfaces • Operating System Compatibility: Should be operable on any OS that supports C++ (e.g., Windows, Linux, macOS). • Compiler Requirements: Compatible with C++11 or higher. ii. User Interfaces • Command-Line Interface (CLI): The application operates through the CLI, prompting users to input values and displaying outputs directly in the terminal. iii. Hardware Interfaces • Keyboard: Users will need a standard keyboard to enter values and commands. • Display Monitor: Output results and messages will be displayed on a terminal window. iv. Software Interfaces • C++ Libraries: o iostream: For handling input and output. o cmath: For performing mathematical operations, including pow. o limits: Used for error handling and clearing invalid inputs. v. Communication Interfaces The program does not require internet or other communication interfaces, as it operates locally within a single CLI environment. vi. Memory Constraints The program’s memory usage is minimal. It utilizes standard data types and iterates based on user-defined steps, with calculations stored temporarily during processing and outputted directly after each computation. b. Design Constraints i. Operations • Get Input: Prompt user for inputs, including bounds, step size, and a value for nnn. • Validation: Check that values meet specified criteria (e.g., n>7, a<b, non-negative step size). • Calculation: Perform calculations based on whether x<3 or x≥3x. • Display Results: Output results to the terminal, displaying either a single result or a series based on step intervals between bounds a and b. ii. Site Adaptation Requirements The program requires no specific environment setup beyond a CLI and C++ support, making it adaptable across most computing environments. c. Product Functions The program performs the following main functions:
  7. Input Collection and Validation: Ensures user inputs adhere to required conditions (e.g., n>7, non-negative step sizes).
  8. Iterative Calculation: Based on input values, calculates results for x across a specified range, using different formulas depending on the value of x.
  9. Output Results: Outputs calculated results for each step iteration. d. User Characteristics Users are expected to: • Be familiar with using CLI applications. • Understand basic mathematical inputs and requirements (e.g., entering valid numbers). • Be able to follow simple prompts to provide required inputs. e. Constraints, Assumptions, and Dependencies • Constraints: Input n must be greater than 7. Step size should be non-negative. • Assumptions: Users will input values as prompted and follow constraints. • Dependencies: Program depends on C++ standard libraries, requiring a C++ compiler for operation.
  10. Specific Requirements a. External Interface Requirements • Keyboard Input: Used to enter values for variables x, n, step size and bounds. • Console Output: Displays prompts, validation error messages, and calculation results. b. Functional Requirements
  11. User Input Collection: o Program prompts for bounds a and b, step size, and value n. o Repeatedly requests input until valid values are provided.
  12. Input Validation: o Confirms n>7; if not, prompts user to re-enter. o Ensures step size is non-negative and that lower bound a is less than upper bound b.
  13. Calculation Logic: o If x<3: Calculates result=5⋅x−2 and adjusts with a double summation based on user-defined bounds. o If x≥3: Computes a product and summation and calculates the final result based on these conditions.
  14. Display of Results: o Outputs calculated results for each step within the range a to b or displays a single result if no iteration is needed.
  15. Run Again Prompt: o Asks users if they want to run the program again with different inputs. c. Performance Requirements • Calculations and output should execute quickly, typically within a few seconds. • Program responsiveness should allow immediate feedback on input validation errors. d. Logical Database Requirement • No data storage requirements; the program operates purely on user input and displays real-time calculations. e. Software System Attributes i. Reliability • The program should handle input errors gracefully, displaying validation messages for incorrect inputs. ii. Availability • Program is designed to run on any compatible system and should be available as long as the operating environment supports C++. iii. Security • No specific security requirements; application operates locally with no sensitive data. iv. Maintainability • Modular functions (e.g., for input handling, validation, and calculation) make it easy to update and debug. v. Portability • Application should be portable to any operating system with C++ compiler support, with minimal adjustments required. f. Environment Characteristics i. Hardware Requirements • Desktop or laptop computer with a standard keyboard and display. ii. Peripherals No additional peripherals required