Explain C tags in C language

Tokens are generally the smallest, indivisible units in a C program and have different meanings.

Types of tokens

The various types of tokens in C are as follows -

• Identifier - This refers to The name of a function, variable, array, structure, etc.

• Operators - These symbols tell the C compiler to perform some logical, mathematical, or relational operation.

• Special Characters - All characters except letters and numbers are called special characters.

• Constants - Some fixed values ​​that cannot be changed during runtime of a program execution are called constant items

• Keywords/Reserved Names - These are predefined words with some special meaning and cannot be used as variable names.

Example

The following is a C program using tokens -

#include<stdio.h>
int main(){
   int p, q, result;
   p = 2, q= 3;
   result = p + q;
   printf ("result = %d </p><p>", result);
}

Here,

• main is the identifier .
• {,}, (,) are delimiters.
• int is the keyword.
• p, q, result are identifiers.
• main, {, }, (, ), int, p, q, result are together called tags.

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