Write programs and run on computer Create a class named Student with three priva

Question

1. Write programs and run on computer
   Create a class named Student with three private member variables: name, gpa, and age. Based on the main() given below, you need to implement the following functions for class Student:
   
   1. Constructors: default constructor, parameterized constructor, and copy constructor. Note that the copy constructor clones a Student object with the same info but 10 years older. Default values for a Student object are John Doe/3.0/20
      
   2. Destructor: just print out a message that says the destructor is being called.
      
   3. Assignment operator = overloading function
      
   4. A print function that outputs all available information about a student.
      
   5. In each constructor and the destructor, add an output message indicating the constructor or destructor is being called, like "copy constructor is being called by Student John Doe"
      
   6. Mark which statement outputs which message

int main() { Student s1; Student s2("Jesus"); Student s3("Marissa Love", 3.75, 21); Student s4(s3); Student s5 = s2; Student * s6 = new Student("Jose");
s1 = s2;
s1.print(); s2.print(); s3.print(); s4.print(); s5.print(); s6->print(); delete s6; return 0; }
2. [Reference Variables] Given the following code fragment, what is the output? Run the program on computer and compare your answer. How does this relate to passing-by-reference in function calls? Give an example.
int a = 8; int & p = a; cout << a << endl; p = 10; cout << a << endl;

using namespace std;
//Sum the numbers in an array int sum(int * nums, int size) { int s = 0; for (int i = 0; i < size; i++) { s = s + nums[i]; } return s; }
3. [Pointer Variables] Given the following code fragment, what is the output? Run the program on computer and compare your answer. Is passing-by-reference or passing-by-value used to pass the array to function sum?
int main() { int MAX = 3; int a[5] = {12, 2, 5, 3, 8}; int * b = new int[MAX]; int * p; p = a; cout << *a << endl; cout << a[0] << endl; cout << *(a + 3) << endl; cout << *(p + 3) << endl; for (int i=0; i < MAX; i++)    b[i]=a[i];     cout << sum(a, 5) << endl; cout << sum(p, 4) << endl; cout << sum(b, MAX) << endl;
return 0; } int main() { Student s1; Student s2("Jesus"); Student s3("Marissa Love", 3.75, 21); Student s4(s3); Student s5 = s2; Student * s6 = new Student("Jose");
s1 = s2;
s1.print(); s2.print(); s3.print(); s4.print(); s5.print(); s6->print(); delete s6; return 0; }
2. [Reference Variables] Given the following code fragment, what is the output? Run the program on computer and compare your answer. How does this relate to passing-by-reference in function calls? Give an example.
int a = 8; int & p = a; cout << a << endl; p = 10; cout << a << endl;

using namespace std;
//Sum the numbers in an array int sum(int * nums, int size) { int s = 0; for (int i = 0; i < size; i++) { s = s + nums[i]; } return s; }
3. [Pointer Variables] Given the following code fragment, what is the output? Run the program on computer and compare your answer. Is passing-by-reference or passing-by-value used to pass the array to function sum?
int main() { int MAX = 3; int a[5] = {12, 2, 5, 3, 8}; int * b = new int[MAX]; int * p; p = a; cout << *a << endl; cout << a[0] << endl; cout << *(a + 3) << endl; cout << *(p + 3) << endl; for (int i=0; i < MAX; i++)    b[i]=a[i];     cout << sum(a, 5) << endl; cout << sum(p, 4) << endl; cout << sum(b, MAX) << endl;
return 0; } int main() { Student s1; Student s2("Jesus"); Student s3("Marissa Love", 3.75, 21); Student s4(s3); Student s5 = s2; Student * s6 = new Student("Jose");
s1 = s2;
s1.print(); s2.print(); s3.print(); s4.print(); s5.print(); s6->print(); delete s6; return 0; }
2. [Reference Variables] Given the following code fragment, what is the output? Run the program on computer and compare your answer. How does this relate to passing-by-reference in function calls? Give an example.
int a = 8; int & p = a; cout << a << endl; p = 10; cout << a << endl;

2. [Reference Variables] Given the following code fragment, what is the output? Run the program on computer and compare your answer. How does this relate to passing-by-reference in function calls? Give an example.
int a = 8; int & p = a; cout << a << endl; p = 10; cout << a << endl;

using namespace std;
//Sum the numbers in an array int sum(int * nums, int size) { int s = 0; for (int i = 0; i < size; i++) { s = s + nums[i]; } return s; }
3. [Pointer Variables] Given the following code fragment, what is the output? Run the program on computer and compare your answer. Is passing-by-reference or passing-by-value used to pass the array to function sum?
int main() { int MAX = 3; int a[5] = {12, 2, 5, 3, 8}; int * b = new int[MAX]; int * p; p = a; cout << *a << endl; cout << a[0] << endl; cout << *(a + 3) << endl; cout << *(p + 3) << endl; for (int i=0; i < MAX; i++)    b[i]=a[i];     cout << sum(a, 5) << endl; cout << sum(p, 4) << endl; cout << sum(b, MAX) << endl;
return 0; } using namespace std;
//Sum the numbers in an array int sum(int * nums, int size) { int s = 0; for (int i = 0; i < size; i++) { s = s + nums[i]; } return s; }
3. [Pointer Variables] Given the following code fragment, what is the output? Run the program on computer and compare your answer. Is passing-by-reference or passing-by-value used to pass the array to function sum?
int main() { int MAX = 3; int a[5] = {12, 2, 5, 3, 8}; int * b = new int[MAX]; int * p; p = a; cout << *a << endl; cout << a[0] << endl; cout << *(a + 3) << endl; cout << *(p + 3) << endl; for (int i=0; i < MAX; i++)    b[i]=a[i];     cout << sum(a, 5) << endl; cout << sum(p, 4) << endl; cout << sum(b, MAX) << endl;
return 0; }

Explanation / Answer

Answer 2)

when you declare a array such as a[5]. it use a as a constant variable to hold the address of the first element of array. Constant means this address stored in a can not be changed.

and here p is a simple pointer to an integer which point to start of the array a .

so here

passing-by-reference is used to pass the array.

Answer 1) see comment link of paste bucket.

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