C++ Answers

Write a C++ program that converts a decimal number to a binary, octal, and

hexadecimal equivalents. First, the program will ask to fix a range for the lower and

upper limit in which the conversion is required. The lower limit should not be less than

0 and greater than the upper limit. For example, if you enter a negative number or

greater than the upper limit, then the program should print a message for the invalid

input and will ask you again to enter a decimal number within the range. If you

correctly specify the upper and lower limits, then the program will print a table of the

binary, octal and hexadecimal equivalents of the decimal numbers in the range of

lower limit through upper limit.

Specific grading criteria: In this program you should use all the loops (e.g., while,

do-while and for loop) each of them only one time. The output mentioned below is just

an example; more clear and well- presented output will improve your points.

Your goal is to overload the operators for “Array” class. You will need to write three files (array.h, array.cpp).

class Array{

// think about the private data members...

public:

Array();

Array(int size);

Array(int* arr, int size);

Array(const Array &);

int& operator[](int i); // returns int at [i] int& operator[](int i) const;

const Array & operator=(const Array&);

Array operator+(const Array&);

Array operator-(const Array&);

Array operator++();

Array operator++(int);

Array& operator--(int);

bool operator==(const Array&)const; // returns true if two arrays are same

bool operator!(); // returns true if the Array is empty

void operator+=(const Array&);

void operator-=(const Array&);

int operator()(int idx, int val); // erases the value val at idx. Returns 1 for deletion and -1 if idx does not exist or is invalid.

~Array();

};

ostream& operator<<(ostream& input, const Array&);

istream& operator>>(istream& output, Array&);

class Rational {

public:

Rational(int n=0,int d=1);

Rational(const Rational &copy);

Rational operator = (const Rational &x);

Rational operator+(const Rational &x) const;

Rational operator-(const Rational &x) const;

Rational operator*(const Rational &x) const;

Rational operator/(const Rational &x) const;

Rational operator += (const Rational &x);

Rational operator -= (const Rational &x);

Rational operator *= (const Rational &x);

Rational operator /= (const Rational &x);

bool operator == (const Rational & other) const;

bool operator < (const Rational & other) const;

bool operator > (const Rational & other) const;

bool operator <= (const Rational & other) const;

bool operator >= (const Rational & other) const;

operator string() const;

~Rational();

};

ostream& operator<<(ostream& output, const Rational &);

istream& operator>>(istream& input, Rational&);

Write a program to overload operators in the same program by writing suitable operator friend functions for following expression:

O6=((O1+O2) -(O3*O4) * (++O5)) [Here O1,O2,O3,O4,O5 and O6 are objects of a class “overloading”, and this class is having one integer data member]

param is a course instructor of c++ programming and currently he is teaching conservations to his students.He started with the basic programs and now he want to introduce some complex problems,he want to start with high difficulty level problem ,such as:counting the digits of a number help Mr .param to write a program which will accept one integer argument and returns count of digits of that argument using class to basic conversion

Write a program to overload operators in the same program by writing suitable operator member functions for following expression:

O7= ((O1 % O2)>(O3 || O4) - (O5>O6)) [Here O1,O2,O3,O4,O5,O6 and O7 are objects of a class “overloading”, and this class is having one integer data member] 

: Write a program to take input for n number of doctor records and write records of all cardiologists in a file named: “record1”. Also write records of all those doctors in another file named: “record2” who are taking salary more than INR 80,000. After writing records in both files, merge their contents in another file: “finalrecord” and read all records of “finalrecord” file and display on screen. [Attributes of doctor: doc_id, doc_name, doc_specialization, doc_salary]

Write a program to overload binary + operator using friend function to add values entered in kilo meters and meters and to overload binary – operator using member function to subtract values entered in kilograms and grams

Write a program to overload operators in the same program by writing suitable operator member functions for following expression:

07= ((01 % 02)>(03 || 04) - (05>06)) [Here 01,02,03,04,05,06 and 07 are objects of a class "overloading", and this class is having one integer data member]

Write a program to overload operators in the same program by writing suitable operator member functions for following expression:

O7= ((O1 % O2)>(O3 || O4) - (O5>O6)) [Here O1,O2,O3,O4,O5,O6 and O7 are objects of a class “overloading”, and this class is having one integer data member]