- This Is Source Code That You Have To Use Then This Is The Task C Pls Finish Following Task And Don T Forget Take Scre 1 (160.2 KiB) Viewed 49 times
- This Is Source Code That You Have To Use Then This Is The Task C Pls Finish Following Task And Don T Forget Take Scre 2 (79.7 KiB) Viewed 49 times
- This Is Source Code That You Have To Use Then This Is The Task C Pls Finish Following Task And Don T Forget Take Scre 3 (80.1 KiB) Viewed 49 times
Program 11-8 Contents of NumberArray2.h 1 #include <iostream> 2 using namespace std; 3 4 class NumberArray 5 { 6 private: 7 double *aPtr; 8 int arraySize; 9 public: 10 NumberArray (NumberArray &); 11 NumberArray (int size, double value); (program continues) Copy Constructors 701 Program 11-8 (continued) 12 -NumberArray() { if (arraySize > 0) delete [] aptr; } 13 void print(); 14 void setValue( double value); 15 }; * * * * ********** ********* Contents of NumberArray2.cpp 1 #include <iostream> 2 #include "NumberArray2.h" 3 using namespace std; 4 5 //********* 6 //Copy constructor allocates a new 7 //array and copies into it the entries 8 l/of the array in the other object. 9 //********* 10 NumberArray:: NumberArray (NumberArray &obj) 11 { 12 arraySize = obj.arraySize; 13 aPtr = new double[ arraySize]; 14 for(int index = 0; index < arraySize; index++) 15 aPtr[index] = obj.aPtr[index]; 16 } 17 18 //********* 19 //Constructor allocates an array of the 20 //given size and sets all its entries to the 21 1/given value. 22 //********* 23 NumberArray: : NumberArray(int size, double value) 24 { 25 arraySize = size; 26 aPtr = new doubleſ arraySize]; 27 setValue(value); 28 } 29 30 // ****************************************************** 31 //Sets all the entries of the array to the same value. 32 //******** 33 void NumberArray::setValue(double value) 34 { 35 for(int index = 0; index < arraySize; index++) 36 aPtr[index] = value; 37 } 38 39 //********* 40 1/Prints all the entries of the array. 41 //********* 42 void NumberArray: :print() 43 { 44 for(int index = 0; index < arraySize; index++) 45 cout << aPtr[index] << " "; 46 } ****** * ***** * ***** (program continua
Program 11-8 (continued) Contents of Pri1-8.cpp 1 // This program demonstrates the use of copy constructors. 2. #include <iostream> 3 #include <iomanip> 4 #include "NumberArray2.h" 5 6 using namespace std; 7 8 int main() 9 { 10 NumberArray first(3, 10.5); 11 12 1/Make second a copy of first object. 13 NumberArray second = first; 14 15 // Display the values of the two objects. 16 cout << setprecision(2) « fixed « showpoint; 17 cout << "Value stored in first object is "; 18 first.print(); 19 cout << "\nValue stored in second object is "; 20 second.print(); 21 cout << "\nOnly the value in second object will" 22 "be changed. \n"; 23 24 //Now change value stored in second object. 25 second.setValue(20.5); 26 27 // Display the values stored in the two objects. 28 cout << "Value stored in first object is "; 29 first.print(); 30 cout << endl << "Value stored in second object is "; 31 second.print(); 32 return 0; << 33 }
3.2 Task One: Program 11-8 (Page 700-702). (40 marks) (1)Input source code and compile it. Run the program and capture screenshots of output. (20 marks) (2)Change NumberArray to CharArray . Do not forget change code in main function. (20 marks) //Contents of CharArray.h #include <iostream> using namespace std; class CharArray 3 { private: char *aPtr; int arraySize; public: CharArray(CharArray &); CharArray(int size, char value); -CharArray() { if (arraysize > 0) delete [] aptr; } void print(); void setValue(char value); Example running result is shown as below(you can change test data): Value stored in first object is z z z Value stored in second object is z 2 z Only the value in second object will be changed. Value stored in first object is z zz Value stored in second object is a a a