Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask C/C++ Expert


Home >> C/C++

Aims:

The main purpose of the assignment is to let you practice the following programming concepts and techniques:

  •  pointers;
  •  command line arguments;
  •  dynamic memory allocation;
  •  operations on strings.

General presentation:

Your program will accept an English description of a system of linear equations as command line arguments.

Practically, this English description will be stored in a le, say test.txt, and the program will be run with the command

a.out $(cat test.txt)

The English description of the system of linear equations is to be translated into a formal representation and solved.

The assignment does not require to build a parser: simple pattern matching can do the job.

The le helpers.c suggests a possible approach to get you started. Use it if you nd it useful, you might or might not include all or part of it in your implementation.

Detailed description:

Each equation will be described by a sentence that will be generated by the following context-free grammar. The nonterminal symbols of the grammar are:

SENTENCE
EXPRESSION1
EXPRESSION
PRODUCT1
PRODUCTS
PRODUCT
CONSTANTS
CONSTANT
VARIABLE

The start symbol is SENTENCE.

The production rules are:

SENTENCE --> EXPRESSION1 is equal to EXPRESSION.
SENTENCE --> EXPRESSION1 equals EXPRESSION.
EXPRESSION1 --> EXPRESSION1 plus EXPRESSION
EXPRESSION1 --> The result of adding PRODUCTS and PRODUCT
EXPRESSION1 --> The sum of PRODUCTS and PRODUCT
EXPRESSION1 --> PRODUCT1
EXPRESSION --> EXPRESSION plus EXPRESSION
EXPRESSION --> the result of adding PRODUCTS and PRODUCT
EXPRESSION --> the sum of PRODUCTS and PRODUCT
EXPRESSION --> PRODUCT
PRODUCTS --> PRODUCTS, PRODUCT
PRODUCTS --> PRODUCT
PRODUCT1 --> The result of multiplying CONSTANT by CONSTANT
PRODUCT1 --> The result of multiplying VARIABLE by CONSTANT
PRODUCT1 --> The result of multiplying CONSTANT by VARIABLE
PRODUCT1 --> The product of CONSTANTS and CONSTANT
PRODUCT1 --> The product of VARIABLE, CONSTANTS and CONSTANT
PRODUCT1 --> The product of VARIABLE and CONSTANT
PRODUCT1 --> The product of CONSTANTS, VARIABLE, CONSTANTS and CONSTANT
PRODUCT1 --> The product of CONSTANTS, VARIABLE and CONSTANT
PRODUCT1 --> The product of CONSTANTS and VARIABLE
PRODUCT --> the result of multiplying CONSTANT by CONSTANT
PRODUCT --> the result of multiplying VARIABLE by CONSTANT
PRODUCT --> the result of multiplying CONSTANT by VARIABLE
PRODUCT --> the product of CONSTANTS and CONSTANT
PRODUCT --> the product of VARIABLE, CONSTANTS and CONSTANT
PRODUCT --> the product of VARIABLE and CONSTANT
PRODUCT --> the product of CONSTANTS, VARIABLE, CONSTANTS and CONSTANT
PRODUCT --> the product of CONSTANTS, VARIABLE and CONSTANT
PRODUCT --> the product of CONSTANTS and VARIABLE
PRODUCT --> CONSTANT times CONSTANT
PRODUCT --> VARIABLE times CONSTANT
PRODUCT --> CONSTANT times VARIABLE
PRODUCT --> CONSTANT
PRODUCT --> VARIABLE
CONSTANTS --> CONSTANTS, CONSTANT
CONSTANTS --> CONSTANT
plus the production rules of the form
CONSTANT --> C_constant_of_type_int_or_float
VARIABLE --> C_variable

Hence the terminal symbols of the grammar are all lowercase words in the production rules, which includes C constants and variables.

An English equation is a sentence generated by the grammar, namely, any sequence of terminals that can be obtained from the grammar, starting with SENTENCE (the start symbol), applying the production rules, until nothing but terminals are obtained.

No assumption should be made on the number of English equations provided as input, nor on the length of an English equation, nor on the length of a variable.

The number of variables is assumed to be equal to the number of equations.

Your program should:

  • output the variables in the equations in lexicographic order;
  • output a formal representation of the English equations;
  • output whether or not there is a unique solution, and in case there is one, output it.

Sample outputs:

ex:

$ cat text_1.txt
The result of multiplying 2 by x plus y times 3 plus 5 times z is equal to 10.
The product of x and 3 plus the product of 7 and y plus z times 4 is equal to 3.
The product of 2 and y plus the result of multiplying z by 2 plus x equals 3.
$ a.out $(cat test_1.txt)
The variables are:
x y z
The equations are:
2.00 x + 3.00 y + 5.00 z = 10.00
3.00 x + 7.00 y + 4.00 z = 3.00
1.00 x + 2.00 y + 2.00 z = 3.00
The system of equations has a unique solution:
x = 3.00
y = -2.00
z = 2.00

C/C++, Programming

  • Category:- C/C++
  • Reference No.:- M91986

Have any Question? 


Related Questions in C/C++

1 write a c program that allows the user to create a test

1. Write a C++ program that allows the user to create a test bank of questions 2. The program should first ask the user how many questions he or she wishes to create. 3- The user should now be prompted for all informatio ...

Assignmentoverviewthis assignment consists of implementing

Assignment Overview This assignment consists of implementing an application using the techniques learned in the first half of the course. Examples on how to use file operations, random number generation, the standard tem ...

C projectphase 11- you need to take input from user study

C project Phase 1 1- You need to take input from user study year (proper value check from 1 to 4) 2- Take input semester (proper value check 1 to 8) 3- Calculate GPA (use Loop, calculate GPA for semester 1,2,3...) Exampl ...

Intro to programming in c programming assignmentassignment

Intro to Programming in C Programming Assignment Assignment purpose: User defined functions, pointers, Menu driven program A Company needs to create software for their new line of phone applications. Customers will have ...

Assignmentpart acomplete the following questionswrite c

Assignment Part A Complete the following questions: Write C++ code to open a document with the name Hello.txt, place the message "Hello, World!" in the document, and exit the document. Re open the file you closed, and re ...

Design implement test and debug a c program to simulate the

Design, implement, test, and debug a C# program to simulate the rolling of two dice 100 times. Whenever the two dice display the same number, the program should show the roll sequence number (e.g. the 10th roll) and the ...

Create your own unique while-end repetition structure you

Create your own unique While-End repetition structure. You decide the theme. You should provide both the pseudocode and the flowchart of your example. Be sure to provide an overview of what your repetition structure is d ...

Assignmentconsider the following declarationsclass

Assignment Consider the following declarations: class bagType { public: void set(string, double, double, double, double); void print() const; string getStyle() const; double getPrice() const; void get(double, double, dou ...

1 we know that from ece 109 to calculate the

1. We know that from ECE 109, to calculate the equivalent resistance of a network of resistors in series in parallel are given by: Write a C++ program that asks the user to input values for resistors (as many as they wou ...

Assignmentthis is the programthis program will use 2

Assignment This is the program: This program will use 2 different data structures to perform the same tasks; a vector and a dynamically sized array Write a complete C++ program that will: Declare a vector of integers wit ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro