MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Variables often store simple data, like integers and literal strings, but some programming languages allow a variable to store values of other datatypes as well. Such languages may also enable functions to be parametric polymorphic. These functions operate like variables to represent data of multiple types.

Detailed explanation-2: -In VBA, each variable has a specific data type, which indicates which type of data it may hold. For instance, a variable that holds text strings has the data type String and is called a string variable. A variable that holds integers (whole numbers) has the data type Integer and is called an integer variable.

Detailed explanation-3: -A data type, in programming, is a classification that specifies which type of value a variable has and what type of mathematical, relational or logical operations can be applied to it without causing an error.

Detailed explanation-4: -Variables are the nouns of a programming language: they are the entities (values, data) that act or are acted upon. The character-counting program uses two variables–count and args . The program increments count each time it reads a character from the input source and ignores args .

Detailed explanation-5: -Most modern computer languages recognize five basic categories of data types: Integral, Floating Point, Character, Character String, and composite types, with various specific subtypes defined within each broad category.