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Trắc nghiệm Ngôn Ngữ Lập Trình C++ - Bài 53

1-	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; }
	A -	The program will print the output 1 2 3.
	B -	The program will print the output 2 3 4.
	C -	The program will print the output 0 1 2.
	D -	It will result in a compile time error.
2-	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; }
	A -	The program will print the output 1 2 3 4 5.
	B -	The program will print the output 2 4 6 8 10.
	C -	The program will print the output 1 1 1 1 1.
	D -	It will result in a compile time error.
3-	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; }
	A -	It will result in a compile time error.
	B -	The program will print the output 5 5 5 8.
	C -	The program will print the output 5 5 8 8.
	D -	The program will print the output 5 5 5 5.
4-	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; }
	A -	2 3 6
	B -	4 4 7
	C -	4 5 8
	D -	3 4 6
5-	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; }
	A -	It will result in a compile time error.
	B -	The program will print the output 64 9.
	C -	The program will print the output 64 10.
	D -	The program will print the output 64 11.
6-	Which of the following statement is correct about the program given below? #include<iostream.h> class Bix { int x, y; public: Bix(int x, int y) { this->x = x; this->y = y; } void Display() { cout<< x << " " << y; } }; int main() { int x = 50; int &y = x ; Bix b(y, x); return 0; }
	A -	The program will print the output 50 50.
	B -	The program will print the two garbage values.
	C -	It will result in a compile time error.
	D -	The program will print nothing.
7-	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; }
	A -	The program will print the output 10 10.
	B -	The program will print the output 10 11.
	C -	The program will print the output 11 10.
	D -	The program will print the output 11 11.
8-	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; }
	A -	The program will print the output 100 10.
	B -	The program will print the output 100 100.
	C -	The program will print the output 100 garbage.
	D -	The program will print two garbage values.
9-	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; }
	A -	The program will print the output 10 10.
	B -	The program will print the output 10 11.
	C -	The program will print the output 11 11.
	D -	The program will print the output 11 10.
10-	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; }
	A -	It will result in a compile time error.
	B -	The program will print two garbage values.
	C -	The program will print the output 10 20.
	D -	The program will print the address of variable x1 and y1.

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