Question

Program C++ (use visual studio)

Q1. What default copy constructor does the compiler insert in the following class?

class Student {

string name;

string id;

double grade;

};

===========================

Q2 .What is the factor transfer method used when the f() function is called from?

void f(int n[]);

int main() {

int m[3]= {1, 2, 3};

f(m);

}

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Q3. Write a program that produces a bigger() with a prototype as shown below and outputs a large value by inputting two integers from the user. Bigger() returns true or false if a given factor is equal to a, b, and passes the large number to big.

[ bool bigger(int a, int b, int& big); ]

program code:

Answer 1

Q.no.1:

The default copy constructor the compiler insert in the given Student  class is

Student( Student &N) { Name = N.Name ; id = N.id ; grade = N.grade ; }

//Where Student is the default copy constructor function name

//The Student inside the parenthesis is an object of the Student class and it stores the address of a N variable of type Student.

//The attributes of N are assigned to the Student class data members

Q.no.2:

//In the given program

void f(int n[]);

int main() {

int m[3]= {1, 2, 3};

f(m);

}

//The function void f(int n[]); is not defined and it does not include the proper arguments to define the factor transfer method.

//The function void f(int n[]); only gets a copy of the m[3] integer array defined in main function

Q.no.3:

#include<iostream>
using namespace std;
//function prototype
bool bigger(int a, int b, int big);

int main() {
//Factor to be compared
int big = 10;
int a,b;
cout <<"Enter the 1st integer :\n";
cin >> a;
cout <<"Enter the 2nd integer :\n";
cin >>b;
cout <<"\n";
cout << bigger( a, b, big);
return 0;
}

bool bigger(int a, int b, int big) {
  
// Function returns true or false by comparing two numbers entered by user

if (a > b) {
   if(big > a) {
   return true;
}

else {
   big = a;
   return false;
}
}
if (a < b) {
   if(big > b) {
   return true;  
}

else {
   big = b;
   return false;  
}
}
}

// 0 means False condition

// 1 means True condition

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