C Language Interview Question and Answers
| 26. |
What is static identifier? |
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- A file–scope variable that is declared static is visible only to functions within that file.
- A function–scope or block–scope variable that is declared as static is visible only within that scope.
- Further more, static variables only have a single instance.
- In the case of function or block–scope variables, this means that the variable is not “automatic” and thus retains its value across function invocations.
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| 27. |
What is a dynamic constructor? |
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The constructor can also be used to allocate memory while creating objects. Allocation of memory to objects at the time of their construction is known as dynamic construction of objects.The memory is allocated with the help of the new operator. |
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| 28. |
What is the difference between an Array and a List? |
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The main difference between an array and a list is how they internally store the data.
Whereas Array is collection of homogeneous elements. List is collection of heterogeneous elements. |
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| 29. |
What are the advantages of inheritance? |
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- Code reusability
- Saves time in program development.
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| 30. |
what is difference between function overloading and operator overloading? |
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A function is overloaded when same name is given to different function.
While overloading a function, the return type of the functions need to be the same. |
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Gk Questions with Answers