The set of all textual characters or symbols and their corresponding binary patterns is called a(n) ____________________.?
Fill in the blank(s) with the appropriate word(s).
data code
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Which statement is false?
a. All built-in collections are synchronized. b. Concurrent access to a Collection by multiple threads could cause indeterminate results or fatal errors. c. To prevent potential threading problems, synchronization wrappers are used around collection classes that might be accessed by multiple threads. d. A synchronization wrapper class receives method calls, adds some functionality for thread safety and then delegates the calls to the wrapped class.
What property of a loop ensures it will terminate?
What will be an ideal response?
Tablet operating systems come with ________ for typing on the device
Fill in the blank(s) with correct word
Consider class Complex shown in Figs. 11.1–11.3. The class enables opera- tions on so-called complex numbers. These are numbers of the form realPart + imaginaryPart * i, where i has the value ?-1
a) Modify the class to enable input and output of complex numbers through the overloaded >> and << operators, respectively (you should remove the print function from the class). b) Overload the multiplication operator to enable multiplication of two complex numbers as in algebra. c) Overload the == and != operators to allow comparisons of complex numbers. Fig. 11.1 Complex class definition.
// Complex class definition.
#ifndef COMPLEX_H
#define COMPLEX_H
class Complex
{
public:
Complex( double = 0.0, double = 0.0 ); // constructor
Complex operator+( const Complex & ) const; // addition
Complex operator-( const Complex & ) const; // subtraction
void print() const; // output
private:
double real; // real part
double imaginary; // imaginary part
}; // end class Complex
#endif
Fig. 11.2 | Complex class member-function definitions.
// Complex class member-function definitions. #includeFig. 11.3 | Complex numbers.#include "Complex.h" // Complex class definition using namespace std; // Constructor Complex::Complex( double realPart, double imaginaryPart ) : real( realPart ), imaginary( imaginaryPart ) { // empty body } // end Complex constructor // addition operator Complex Complex::operator+( const Complex &operand2 ) const { return Complex( real + operand2.real, imaginary + operand2.imaginary ); } // end function operator+ // subtraction operator Complex Complex::operator-( const Complex &operand2 ) const { return Complex( real - operand2.real, imaginary - operand2.imaginary ); } // end function operator- // display a Complex object in the form: (a, b) void Complex::print() const { cout << '(' << real << ", " << imaginary << ')'; } // end function print
// Complex class test program. #includex: (0, 0) y: (4.3, 8.2) z: (3.3, 1.1) x = y + z: (7.6, 9.3) = (4.3, 8.2) + (3.3, 1.1) x = y - z: (1, 7.1) = (4.3, 8.2) - (3.3, 1.1)#include "Complex.h" using namespace std; int main() { Complex x; Complex y( 4.3, 8.2 ); Complex z( 3.3, 1.1 ); cout << "x: "; x.print(); cout << "\ny: "; y.print(); cout << "\nz: "; z.print(); x = y + z; cout << "\n\nx = y + z:" << endl; x.print(); cout << " = "; y.print(); cout << " + "; z.print(); x = y - z; cout << "\n\nx = y - z:" << endl; x.print(); cout << " = "; y.print(); cout << " - "; z.print(); cout << endl; } // end main