A simple cpp program that parses a polynomial and calculates its root using Newton's method. (April 2015)

How to run the program:

arguments: -r fileName - name of the file from which to get the polynomial -s fileName - name of the file to which the polynomial should be saved -p startPoint - start point of Newton's method -t - launch tests

If read file name is not specified, the program will read the polynomial from standard input. The program accepts polynomials of the following format: a1x^n+a2x^n-1+....+bx+c Terms' coefficients need to be defined even if equal to 0; they can be negative.

Tests have been divided into 3 groups: 1)testFileManager: reading/writing polynomial to file

• 1. wrong file name (file doesn't exist)
• 2. read empty file
• 3. write to existing file
• 4. read polynomial of power=0, check value and write it to different file
• 5. read polynomial of power=1, check value and write it to different file
• 6. read polynomial of power=2, check value and write it to different file
• 7. read polynomial of power=3, check value and write it to different file
• 8. read polynomial of power=10, check value and write it to different file

2. testHelper: test Term and Root classes

• 1. create Term obj and check values returned by class's getters
• 2. create Term of power=1 and check derivative;
• 3. create Term of power=10 and check derivative;
• 4. create Root obj and check values returned by class's getters

3. testPolynomial: test Polynomial class: proper execution of Newton's method

• and quality of results
• 1. test polynomial with negative values
• 2. test polynomial of power=1
• 3. test polynomial of power=2
• 4. test polynomial of power=3
• 5. test polynomial of power=10