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Trắc nghiệm Ngôn Ngữ Lập Trình C++ - Bài 48

1-	What will be the output of the following program? . #include<iostream.h> class IndiaBix { int x; public: IndiaBix(int xx, float yy) { cout<< char(yy); } }; int main() { IndiaBix *p = new IndiaBix(35, 99.50f); return 0;
	A -	99
	B -	ASCII value of 99
	C -	Garbage value
	D -	99.50
2-	Which of the following statement is correct about the program given below? . #include<iostream.h> class IndiaBix { public: IndiaBix() { cout<< "India"; } ~IndiaBix() { cout<< "Bix"; } }; int main() { IndiaBix objBix; return 0; }
	A -	The program will print the output India.
	B -	The program will print the output Bix.
	C -	The program will print the output IndiaBix.
	D -	The program will report compile time error.
3-	Which of the following statement is correct about the program given below? . #include<iostream.h> class Bix { int x; public: Bix(); ~Bix(); void Show() const; }; Bix::Bix() { x = 25; } void Bix::Show() const { cout<< x; } int main() { Bix objB; objB.Show(); return 0; }
	A -	The program will report compile time error.
	B -	The program will print the output Garbage-value.
	C -	The program will print the output 25.
	D -	The program will report runtime error.
4-	Which of the following statement is correct about the program given below? . #include<iostream.h> class Bix { int x; public: Bix(); void Show() const; ~Bix(){} }; Bix::Bix() { x = 5; } void Bix::Show() const { cout<< x; } int main() { Bix objB; objB.Show(); return 0; }
	A -	The program will print the output 5.
	B -	The program will print the output Garbage-value.
	C -	The program will report compile time error.
	D -	The program will report runtime error.
5-	What will be the output of the following program? . #include<iostream.h> int val = 0; class IndiaBix { public: IndiaBix() { cout<< ++val; } ~IndiaBix() { cout<< val--; } }; int main() { IndiaBix objBix1, objBix2, objBix3; { IndiaBix objBix4; } return 0; }
	A -	1234
	B -	4321
	C -	12344321
	D -	12341234
6-	Which of the following statement is correct about the program given below? . #include<iostream.h> class IndiaBix { int p; public: IndiaBix(int xx, char ch) { p = new int(); p = xx + int(ch); cout<< *p; } ~IndiaBix() { delete p; } }; int main() { IndiaBix objBix(10, 'B'); return 0; }
	A -	The program will print the output 76.
	B -	The program will print the output 108.
	C -	The program will print the output garbage value.
	D -	The program will report compile time error.
7-	Which of the following constructor is used in the program given below? . #include<iostream.h> class IndiaBix { int x, y; public: IndiaBix(int xx = 10, int yy = 20 ) { x = xx; y = yy; } void Display() { cout<< x << " " << y << endl; } ~IndiaBix() { } }; int main() { IndiaBix objBix; objBix.Display(); return 0; }
	A -	Copy constructor
	B -	Simple constructor
	C -	Non-parameterized constructor
	D -	Default constructor
8-	What will be the output of the following program? . #include<iostream.h> class BixBase { public: BixBase() { cout<< "Base OK. "; } }; class BixDerived: public BixBase { public: BixDerived() { cout<< "Derived OK. "; } ~BixDerived() { cout<< "Derived DEL. "; } }; int main() { BixBase objB; BixDerived objD; objD.~BixDerived(); return 0; }
	A -	Base OK. Derived OK. Derived DEL.
	B -	Base OK. Base OK. Derived OK. Derived DEL.
	C -	Base OK. Derived OK. Derived DEL. Derived DEL.
	D -	Base OK. Base OK. Derived OK. Derived DEL. Derived DEL.
9-	What will be the output of the following program? . #include<iostream.h> class IndiaBix { int x, y; public: IndiaBix(int xx) { x = ++xx; } ~IndiaBix() { cout<< x - 1 << " "; } void Display() { cout<< --x + 1 << " "; } }; int main() { IndiaBix objBix(5); objBix.Display(); int p = (int) &objBix; *p = 40; objBix.Display(); return 0; }
	A -	5 40 38
	B -	6 40 38
	C -	6 6 5
	D -	6 6 4
10-	What is the technical word for the function ~IndiaBix() defined in the following program? . #include<iostream.h> class IndiaBix { int x, y; public: IndiaBix(int xx = 10, int yy = 20 ) { x = xx; y = yy; } void Display() { cout<< x << " " << y << endl; } ~IndiaBix() { } }; int main() { IndiaBix objBix; objBix.Display(); return 0; }
	A -	Constructor
	B -	Destructor
	C -	Default Destructor
	D -	Function Template

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