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This assignment requires developing a non-scientific calculator using C programming language. The calculator should support only summation, subtraction, division, multiplication, square root, and square operations. It must prompt the user to input a two or more operand mathematical expression similar to a traditional calculator. After computing and displaying the result (accurate up to six decimal places), the user should have the option to continue calculations using the current answer or end the session. Additionally, the calculator should include a help function that displays the supported operations and symbols. The features should include a memory function to store the current answer for later reference, a refresh function to clear the memory and reset operations, and clear instructions for the symbols used for square and square root operations. The program must be compatible with Microsoft Visual Studio 2017 and contain appropriate comments for clarity. Submissions should be in a single *.c file, and late submissions will incur penalties. The code should be well-organized, accurate, and efficient, demonstrating clarity in presentation and programming skills.
Sample Paper For Above instruction
Title: Developing a C-based Non-Scientific Calculator with Memory and Help Functions
The rapid advancement of computer technology and software development has made programming a fundamental skill in various technical fields. Among the numerous applications of programming, creating calculators remains a common educational and practical exercise that demonstrates core programming concepts such as control flow, user input handling, mathematical computations, data storage, and modular programming. This paper discusses the development of a non-scientific calculator in C language, emphasizing key functionalities such as basic arithmetic operations, user interactivity, memory support, help instructions, and compatibility considerations.
The primary goal of this development is to implement a calculator that restricts itself to operations typically available on a non-scientific calculator. These operations include addition, subtraction, multiplication, division, square root, and squaring. Utilizing the math.h header simplifies the implementation of square root and power functions required for these calculations. The calculator interface prompts users to input expressions with multiple operands, which are processed sequentially to produce a final result. The program should handle parsing the input efficiently, manage erroneous inputs gracefully, and display results up to six decimal places to ensure precision.
A crucial feature of the calculator is the ability to perform consecutive calculations. After each operation, the user may choose to use the current answer as the starting point for subsequent operations. This concept of a continuous calculation enhances usability, closely mimicking physical calculator behavior. Incorporating a memory function allows users to store the current answer explicitly, retrieve it later, or clear the stored value. This feature is vital in complex computations where intermediate results need to be preserved. The functions to store, recall, and refresh the memory should be straightforward and user-friendly, with clear prompts and instructions supplied via the help function.
The help functionality is essential for user guidance, especially when symbols for square and square roots are defined arbitrarily. For example, the program might use '^2' for squaring and 'sqrt' for square root, and their meanings should be explicitly stated when the user requests help. Providing comprehensive help ensures the calculator remains accessible for users unfamiliar with the specific symbolic representations. The help function can be invoked whenever needed, displaying the list of supported operations, symbols, and instructions on usage.
Programming considerations include ensuring the code is well-structured, with functions encapsulating different features such as input parsing, calculation operations, memory management, and help display. The main function manages the user interface, orchestrating the sequence of inputs and outputs, and maintaining the program loop until the user chooses to exit. Proper commenting throughout the code is vital for clarity, helping the grader to understand each component's purpose. Additionally, the program must be compatible with Microsoft Visual Studio 2017, so reliance on standard C libraries, proper variable declarations, and avoiding compiler-specific extensions are necessary.
In conclusion, developing a non-scientific calculator in C encompasses implementing fundamental programming techniques, prioritizing usability and accuracy. The incorporation of memory, help functions, and precise output formatting enhances the calculator's functionality and user experience. Such a project serves as an excellent foundation for understanding more complex software development processes and demonstrates proficiency in C programming.