What are Identifiers in C?
Basically, identifiers are the names of entities in any programming language like C, C++ etc. These names can be a variable name, an array name, functions name, structure etc.
Identifiers in C are the combination of a string including uppercase, lowercase, numeric and underscore.
The C identifiers must be an uppercase, lowercase and combination of both upper, lower including numeric and underscore.
let’s understand it-
we can make any identifiers in C by above-used methods. Now if you want to make any variable so you can make that variable as –
int Sal_Ary; etc
similarly, you can create a function having a name –
Note: keep in mind, you can not use reserved keywords as identifiers like int, float, char etc.
There are two types of identifiers-
If you are using an identifiers in C that is called from any external source is known as an external identifier. e.g. function calling that is declared in other files.
Internal identifiers are the local variables that we use in the same file. e.g. int x, y; etc.
You can also read
- The basic structure of c program with an example [Easy notes]
- What are the programming languages? Explain
- What is variable in C language? An interview question
- What is a C programming language [exam oriented answer]
- Number systems used in Computer Technology
Few other C program code
Hope that you understand identifiers in C language. Please comment me below if you have any questions.
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