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Our String class always deletes the old character buffer and reallocates a new character buffer on assignment or in the copy constructor. This need not be done if the new value is smaller than the current value, and hence would fit in the existing buffer. Can we rewrite the String class so that each instance will maintain an integer data field indicating the size of the buffer, then only reallocate a new buffer when necessary. Abstract the common tasks from the assignment operator and the copy constructor, and place them into an internal method?
Here is the string class
class String { public: String(); // Default constructor String(const char p[]); // Simple constructor String(const String& right); // Copy constructor ~String(); // Destructor String& operator=(const String& right); // Assignment operator String& operator+=(const String& right); int length() const; char& operator[](int index); char operator[](int index) const; private: char* buffer; int len; };
Assume we have an array named $students. Each entry in the array contains a student's full name (e.g. "Jane Smith"). Write the PHP code needed to display all students (in the array) whose first name starts with the letter "J".
Classify the two alternatives in terms of what type of application architecture they use. b. Outline the pros and cons of the two alternatives and make a recommendation to Fred about which is better.
Write the function in C ++ to reduce the numerator and denominator in the Rat class to lowest terms.
Implement a graphics System that has classes for various figures: rectangles, squares, triangles and circles. A rectangle has data members height, width, color , and center point. A square has center point and an edge and color
Write a recursive definition in SML to reverse a list of elements and multiply all elements with 2.
Search for the value needle in the array range given by [hay_begin ... hay_end), using the Linear Search algorithm. This function will return a pointer to the needle value if it is found, or a null pointer if needle is not found.
Assuming the array x has been defined as: int x[n]; for some n and that values have been assigned to all the elements. Write a segment of code that prints the number of elements between (but not including) the largest and smallest values in the array..
Write a main function and the following functions to compute the stress and strain in a steel rod of diameter D (inches) and length L (inches) subject to the compression loads P of 10,000 to 1,000,000 pounds.
Show the deatils of an emplyoee in a neat format.
Once the user enters a 0 you will exit the loop, close the file and execute the code as previously designed until you have displayed all of the scores and the average handicap.
How likely is it that two people in one section of our class (40 students) have the same birthday ?
// static field holds rent due date for an office - // rents are due on the 1st
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