A keyword can be used as an identifier by using the prefix @
Description : Describe the following terms: (i) Keyword (ii) Identifier (iii) Variable (iv) Constant
Answer : (i) Keyword: Keywords are special words in C programming which have their own predefined meaning. The functions and meanings of these words cannot be altered. Some keywords in C Programming are if, while, ... or a string literal. There are enumeration constants as well. Example: 121 234 3.14
Description : Which of the following is used to make an Abstract class ? (A) Making atleast one member function as pure virtual function (B) Making atleast one member function as virtual function (C) Declaring as Abstract class using virtual keyword (D) Declaring as Abstract class using static keyword
Answer : (A) Making atleast one member function as pure virtual function
Answer : Answer: Marks to all
Description : Consider the following statements regarding relational database model: (a) NULL values can be used to opt a tuple out of enforcement of a foreign key. (b) Suppose that table T has only one candidate key. If Q is in 3NF, then it is ... true. (C) (b) and (c) are true. (D) (a), (b) and (c) are true.
Answer : (D) (a), (b) and (c) are true.
Answer : A moving-coil permanent-magnet instrument can be used as ammeter by using a low resistance shunt.