C Language Basic to Advance Course > Structure of C

Storage Classes in C Programming

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In C, there are four types of storage: automatic, register, static, and external.

The extern storage class is used to provide a reference to a global variable that is shared by all application files. The variable cannot be initialised when you use 'extern,' but it does direct the variable name to a previously established storage location.

The storage class specifies the place in memory where an object's storage is allocated, as well as the duration of the storage allocation. It also determines the scope, which defines the portion of the programme where a variable name is visible, i.e. the variable is accessible by name.

A variable will only be known globally in this file if it is static. extern means that a global variable defined in another file will be known in this file, and it can also be used to call functions defined in other files.

The term "volatile" does not refer to a storage class. Type qualifiers are volatile and const.

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𝑼𝑻𝑺𝑨𝑽 𝑲𝑼𝑴𝑨𝑹 𝑺𝑰𝑵𝑮𝑯
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this course is very helpfull for my basic development

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Garvit kulshrestha
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extern storage class??specifier??? use of "&"????kha pe h ye sab??? assignment m pucha h par vedio m nhi bataya par jitna bataya h ache se bataya h liked that tho

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Sahasra Live Events 01
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best and useful to keep learning and practice the c-language. Explained well sir. thank you

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syed qutub ghoush
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  1. Introduction to C Programming
    24m 32s
  2. How to use LearnVern
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  3. Assignment : Introduction to C
    3m 17s

  1. Setting up C Environment
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    3m 50s

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  2. Data Types in C Programming
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    7m 38s
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    28m 23s
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  1. Variable Arguments in User Defined Functioncs
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