Write short note on identifiers and Question

Question

Write short note on identifiers and constant

YuriiBelinskyi · Answer

dentifiers definition: identifiers are the names used to uniquely identify variables, functions, arrays, or other user-defined elements in programming.rules:must begin with a letter (a-z, a-z) or an underscore (_) followed by letters, digits (0-9), or underscores.cannot use reserved keywords of the programming language (e.g., int, class, etc.).case-sensitive in most programming languages.examples:

python
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variable_name = 10
myfunction()

purpose: provides meaningful names for elements, improving code readability and organization. constants definition: constants are fixed values that do not change during the execution of a program.types:literal constants: direct values like 5, 'a', or 3.14.defined constants: created using const or #define in programming.usage:to prevent accidental changes to values that are meant to remain constant.useful for defining fixed values such as pi = 3.14159.examples:

python
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pi = 3.14  # constant in python
const int max = 100;  // constant in c++

benefits: improves code clarity, reduces errors, and makes maintenance easier.

tutormahima · Answer

full answer : answers to c++ programming questions pdf and word

SebasCeeport · Answer

identifiers:
in c++, an identifier is the name used to identify variables, functions, arrays, or other user-defined elements. identifiers must begin with a letter or an underscore (_) followed by letters, digits, or underscores, but they cannot use keywords or reserved words. for example, valid identifiers include myvariable, _counter, or totalsum. they are case-sensitive, meaning age and age are treated as distinct identifiers.

constants:
a constant in c++ refers to a value that does not change during the program's execution. constants can be declared using the const keyword or #define preprocessor directive. for example:

using const: const int pi = 3.14;
using #define: #define max_value 100
constants are used to ensure the immutability of values, improve code readability, and prevent accidental modifications.

Mike2023 · Answer

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