Global variable and Nested function

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Difference between Global variable and Nested function

Global variable vs. Nested function

In computer programming, a global variable is a variable with global scope, meaning that it is visible (hence accessible) throughout the program, unless shadowed. In computer programming, a nested function (or nested procedure or subroutine) is a named function that is defined within another, enclosing, block and is lexically scoped within the enclosing block meaning it is only callable by name within the body of the enclosing block and can use identifiers declared in outer blocks, including outer functions.

C (programming language)

C (pronounced – like the letter c) is a general-purpose programming language.

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Computer programming

Computer programming or coding is the composition of sequences of instructions, called programs, that computers can follow to perform tasks.

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Fortran

Fortran (formerly FORTRAN) is a third generation, compiled, imperative programming language that is especially suited to numeric computation and scientific computing.

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Lua (programming language)

Lua is a lightweight, high-level, multi-paradigm programming language designed mainly for embedded use in applications.

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MATLAB

MATLAB (an abbreviation of "MATrix LABoratory") is a proprietary multi-paradigm programming language and numeric computing environment developed by MathWorks.

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Non-local variable

In programming language theory, a non-local variable is a variable that is not defined in the local scope.

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Object-oriented programming

Object-oriented programming (OOP) is a programming paradigm based on the concept of objects, which can contain data and code: data in the form of fields (often known as attributes or properties), and code in the form of procedures (often known as methods).

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Perl

Perl is a high-level, general-purpose, interpreted, dynamic programming language.

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PHP

PHP is a general-purpose scripting language geared towards web development.

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Python (programming language)

Python is a high-level, general-purpose programming language.

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Ruby (programming language)

Ruby is an interpreted, high-level, general-purpose programming language.

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Scope (computer science)

In computer programming, the scope of a name binding (an association of a name to an entity, such as a variable) is the part of a program where the name binding is valid; that is, where the name can be used to refer to the entity.

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Structured programming

Structured programming is a programming paradigm aimed at improving the clarity, quality, and development time of a computer program by making extensive use of the structured control flow constructs of selection (if/then/else) and repetition (while and for), block structures, and subroutines.

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