LIST-I (file mode parameters) LIST-II (Meaning) A. ios::ate I. Go to end of file on opening B. ios::in II. Open fails if the file already exists. C. ios::nocreate III. Open file for reading only D. ios::noreplace IV. Open fails if the file does not exist.
Matching C++ File Mode Parameters
Understanding the File Stream Parameters
This question requires matching C++ file stream opening mode parameters (LIST-I) with their corresponding meanings (LIST-II). These parameters control how a file is opened and accessed.
Parameter Meanings
- ios::ate: Sets the initial position of the file pointer to the end of the file upon opening.
- ios::in: Specifies that the file is to be opened for reading (input operations).
- ios::nocreate: If the file specified does not exist, the open operation fails.
- ios::noreplace: If the file specified already exists, the open operation fails.
Correct Matching
Based on the definitions, the correct pairings are:
- A. $ios::ate$ matches with I. Go to end of file on opening.
- B. $ios::in$ matches with III. Open file for reading only.
- C. $ios::nocreate$ matches with IV. Open fails if the file does not exist.
- D. $ios::noreplace$ matches with II. Open fails if the file already exists.
Solution Summary Table
| LIST-I | LIST-II |
| A. ios::ate | I. Go to end of file on opening |
| B. ios::in | III. Open file for reading only |
| C. ios::nocreate | IV. Open fails if the file does not exist |
| D. ios::noreplace | II. Open fails if the file already exists |
Therefore, the correct combination is A-I, B-III, C-IV, D-II.
Important Questions from OOPs concept
Let A be the base class in C++ and B be the derived class from A with protected inheritance. Which of the following statement is false for class B?
Which of the following statements are true regarding C++?
(a) Overloading a function gives the capability to an existing operator to operate on other data types.
(b) Inheritance in object-oriented programming provides support to reusability.
(c) When object of a derived class is defined, first the constructor of derived class is executed then constructor of a base class is executed.
(d) Overloading is a type of polymorphism.
Choose the correct option from those given below:Match List I with List II
List I List II (Programming Paradigm) (Characteristic) A. Imperative I. Declarative, clausal representation, theorem proving B. Object‐oriented II. Side‐effect free, declarative, expression evaluation C. Logic III. Imperative, abstract data type D. Functional IV. Command‐based, procedural Choose the correct answer from the options given below :
A member function can always access the data in _______, (in C++).
Which of the following is not correct for virtual function in C++?
