Explore topic-wise MCQs in Engineering.

Which of the following statement is correct about the program given below?

#include<iostream.h> class IndiaBix
{ int x, y; public: void SetValue(int &xx, int &yy) { x = xx++; y = yy; cout<< xx << " " << yy; }
};
int main()
{ int x = 10; int &y = x; IndiaBix objBix; objBix.SetValue(x , y); return 0; }

Which of the following statement is correct about the program given below?

#include<iostream.h> int main()
{ int x = 10, y = 20; int *ptr = &x; int &ref = y; *ptr++; ref++; cout<< x << " " << y; return 0; }

Which of the following statement is correct about the program given below?

#include<iostream.h> class IndiaBix
{ int x, y; public: IndiaBix(int &xx, int &yy) { x = xx; y = yy; Display(); } void Display() { cout<< x << " " << y; }
};
int main()
{ int x1 = 10; int &p = x1; int y1 = 20; int &q = y1; IndiaBix objBix(p, q); return 0; }

Which of the following statement is correct about the program given below?

#include<iostream.h> class IndiaBix
{ int x, y; public: void SetValue(int &a, int &b) { a = 100; x = a; y = b; Display(); } void Display() { cout<< x << " " << y; }
};
int main()
{ int x = 10; IndiaBix objBix; objBix.SetValue(x, x); return 0;
}

Which of the following statement is correct about the program given below?

#include<iostream.h> class IndiaBix
{ int x, y; public: void SetValue(int &xx, int &yy) { x = xx ++; y = yy; Display(); } void Display() { cout<< x << " " << y; }
};
int main()
{ int x = 10; int &y = x; IndiaBix objBix; objBix.SetValue(x , y); return 0; }

What will be the output of the following program?

#include<iostream.h> class BixTest
{ public: BixTest(int &x, int &y) { x++; y++; } };
int main()
{ int a = 10, b = 20; BixTest objBT(a, b); cout<< a << " " << b; return 0; }

Which of the following statement is correct about the program given below?

#include<iostream.h> int main()
{ int x = 0; int &y = x; y = 5; while(x <= 5) { cout<< y++ << " "; x++; } cout<< x; return 0; }

Which of the following statement is correct about the program given below?

#include<iostream.h> int main()
{ int m = 2, n = 6; int &x = m; int &y = n; m = x++; x = m++; n = y++; y = n++; cout<< m << " " << n; return 0; }

Which of the following statement is correct about the program given below?

#include<iostream.h> int main()
{ int m = 2, n = 6; int &x = m++; int &y = n++; m = x++; x = m++; n = y++; y = n++; cout<< m << " " << n; return 0; }

Which of the following statement is correct about the program given below?

#include<iostream.h> enum xyz
{ a, b, c
};
int main() { int x = a, y = b, z = c; int &p = x, &q = y, &r = z; p = ++x; q = ++y; r = ++c; cout<< p << q << r; return 0;
}

Which of the following statement is correct about the program given below?

#include<iostream.h> int main()
{ int arr[] = {1, 2 ,3, 4, 5}; int &zarr = arr; for(int i = 0; i <= 4; i++) { arr[i] += arr[i]; } for(i = 0; i <= 4; i++) cout<< zarr[i]; return 0; }

Which of the following statement is correct about the program given below?

#include<iostream.h> struct Bix
{ short n;
};
int main()
{ Bix b; Bix& rb = b; b.n = 5; cout << b.n << " " << rb.n << " "; rb.n = 8; cout << b.n << " " << rb.n; return 0; }

What will be the output of the following program?

#include <iostream.h> enum xyz { a, b, c
}; int main()
{ int x = a, y = b, z = c; int &p = x, &q = y, &r = z; p = z; p = ++q; q = ++p; z = ++q + p++; cout<< p << " " << q << " " << z; return 0; }

Which of the following statement is correct about the program given below?

#include<iostream.h> int BixFunction(int m)
{ m *= m; return((10)*(m /= m)); }
int main()
{ int c = 9, *d = &c, e; int &z = e; e = BixFunction(c-- % 3 ? ++*d :(*d *= *d)); z = z + e / 10; cout<< c << " " << e; return 0;
}

Which of the following statements is correct?

1. Pointer to a reference and reference to a pointer both are valid.
2. When we use reference, we are actually referring to a referent.

A reference is declared using the _____ symbol.

Which of the following statement is correct about the program given below?

#include<iostream.h> int main()
{ int x = 80; int y& = x; x++; cout << x << " " << --y; return 0;
}

Which of the following statement is correct about the program given below?

#include<iostream.h> int main()
{ int x = 80; int &y = x; x++; cout << x << " " << --y; return 0;
}

Which of the following statement is correct about the program given below?

#include<iostream.h> int main()
{ int x = 10; int &y = x; x++; cout<< x << " " << y++; return 0; }

Which of the following statement is correct about the program given below?

#include<iostream.h> int main()
{ int x = 10; int &y = x; x = 25; y = 50; cout<< x << " " << --y; return 0; }

Which of the following statement is correct about the program given below?

#include<iostream.h> enum bix
{ a=1, b, c
};
int main()
{ int x = c; int &y = x; int &z = x; y = b; cout<< z--; return 0; }

When are the Global objects destroyed?

Which constructor function is designed to copy objects of the same class type?

Copy constructor must receive its arguments by __________ .

Which of the following statements is correct?

1. A reference is not a constant pointer.
2. A referenced is automatically de-referenced.

Which of the following statements is correct?

1. An array of references is acceptable.
2. We can also create a reference to a reference.

Which of the following statements is correct?

1. Once the variable and the reference are linked they are tied together.
2. Once the reference of a variable is declared another reference of that variable is not allowed.

Which of the following statements is correct?

1. We can return a global variable by reference.
2. We cannot return a local variable by reference.

Reference is like a _____.

What happens when a class with parameterized constructors and having no default constructor is used in a program and we create an object that needs a zero-argument constructor?

Can a class have virtual destructor?

A constructor that accepts __________ parameters is called the default constructor.

Destructor has the same name as the constructor and it is preceded by ______ .

For automatic objects, constructors and destructors are called each time the objects

Functions can be declared to return a reference type. There are reasons to make such a declaration/Which of the following reasons are correct?

1. The information being returned is a large enough object that returning a reference is more efficient than returning a copy.
2. The type of the function must be a R-value.

Which of the following statements is correct?

1. Change a reference changes the referent.
2. We can create an array of references.

Which of the following statement is correct about the references?

Which of the following statements is correct?

1. Once a reference variable has been defined to refer to a particular variable it can refer to any other variable.
2. A reference is not a constant pointer.

Which of the following type of class allows only one object of it to be created?

Which of the following is not the member of class?

Which of the following is not a type of constructor?

Which of the following concepts means determining at runtime what method to invoke?

Which of the following is the correct class of the object cout?

Which of the following cannot be used with the keyword virtual?

Which of the following functions are performed by a constructor?

Which one of the following options is correct about the statement given below? The compiler checks the type of reference in the object and not the type of object.

Which of the following concepts means adding new components to a program as it runs?

Which of the following operator is overloaded for object cout?

Which of the following is correct about class and structure?

Which of the following concepts means wrapping up of data and functions together?