MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science Engineering (CSE) knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Predict the output of following C++ program#include using namespace std;class Empty {}; int main(){cout |
| A. | a non zero value |
| B. | 0 |
| C. | compile time error |
| D. | runtime error |
| Answer» B. 0 | |
| 2. |
class Test { int x;};int main(){Test t; cout |
| A. | 0 |
| B. | garbage value |
| C. | compile time error |
| Answer» D. | |
| 3. |
Which of the following statements is correct for a static member function?1. It can access only other static members of its class. It can be called using the class name, instead of objects |
| A. | only 1 is correct |
| B. | only 2 is correct |
| C. | both 1 and 2 are correct |
| D. | both 1 and 2 are incorrect |
| Answer» D. both 1 and 2 are incorrect | |
| 4. |
Which of the following is true about the following program#include class Test{public:int i;void get();};void Test::get(){std::cout i;}Test t; // Global object int main(){Test t; // local object t.get();std::cout |
| A. | compiler error: cannot have two objects with same class name |
| B. | compiler error in line "::t.get();" |
| C. | compiles and runs fine |
| Answer» D. | |
| 5. |
Predict the output?#include using namespace std;class Test{int x;Test() { x = 5;}};int main(){Test *t = new Test; cout |
| A. | compile time error |
| B. | garbage |
| C. | 0 |
| D. | 5 |
| Answer» B. garbage | |
| 6. |
Is it fine to call delete twice for a pointer?#include using namespace std;int main(){int *ptr = new int; delete ptr;delete ptr; return 0;} |
| A. | yes |
| B. | no |
| Answer» C. | |
| 7. |
What will be the output of following program?#include using namespace std;class Test{public:Test() { cout |
| A. | main started |
| B. | main started hello from test() |
| C. | hello from test() main started |
| D. | compiler error: global objects are not allowed |
| Answer» D. compiler error: global objects are not allowed | |
| 8. |
Which of the following operators are overloaded by default by the compiler?1) Comparison Operator ( == )2) Assignment Operator ( = ) |
| A. | both 1 and 2 |
| B. | only 1 |
| C. | only 2 |
| D. | none of the two |
| Answer» D. none of the two | |
| 9. |
Which of the following is true about constructors. They cannot be virtual. They cannot be private. They are automatically called by new operator |
| A. | all 1, 2, and 3 |
| B. | only 1 and 3 |
| C. | only 1 and 2 |
| D. | only 2 and 3 |
| Answer» C. only 1 and 2 | |
| 10. |
In C++, const qualifier can be applied to Member functions of a class Function arguments To a class data member which is declared as static Reference variables |
| A. | only 1, 2 and 3 |
| B. | only 1, 2 and 4 |
| C. | all |
| D. | only 1, 3 and 4 |
| Answer» D. only 1, 3 and 4 | |
| 11. |
What will be the values of x, m and n after execution of the following statements? Int x, m, n; m=10; n=15; x= ++m + n++; |
| A. | x=25, m=10, n=15 |
| B. | x=27, m=10, n=15 |
| C. | x=26, m=11, n=16 |
| D. | x=27, m=11, n=16 |
| Answer» D. x=27, m=11, n=16 | |
| 12. |
#include using namespace std;int main(){int a;a = 5 + 3 * 5;cout |
| A. | 35 |
| B. | 20 |
| C. | 25 |
| D. | 30 |
| Answer» C. 25 | |
| 13. |
#include using namespace std; class Point {public:Point() { cout |
| A. | compiler error |
| B. | constructor called constructor called |
| C. | constructor called |
| Answer» D. | |
| 14. |
#include using namespace std;class X{public:int x;};int main(){X a = {10};X b = a;cout |
| A. | compiler error |
| B. | 10 followed by garbage value |
| C. | 10 10 |
| D. | 10 0 |
| Answer» E. | |
| 15. |
Output of following program?#include using namespace std; class Point {Point() { cout |
| A. | compile time error |
| B. | run time error |
| C. | constructor called |
| Answer» B. run time error | |