🚀 Programming Example

Demonstration of Tokens in C Language

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💻 Practical Program

📘 Step Learning

Learn this program step-by-step with algorithm, source code, output and detailed explanation.

📌 Information & Algorithm

Start the program.
Declare an integer variable num and initialize it with a value.
Use the printf() function to display the value.
Observe the different tokens used in the program such as keywords, identifiers, constants, operators, and special symbols.
End the program.

In C programming, a token is the smallest individual unit of a program that has a meaningful interpretation to the compiler. Tokens are the building blocks of a C program. The major types of tokens in C are:

Keywords (e.g., int, return)
Identifiers (e.g., main, num)
Constants (e.g., 100)
Operators (e.g., =)
Special Symbols (e.g., { }, ( ), ;)

💻 Program Code

#include <stdio.h>

int main()
{
    int num = 100;

    printf("Value of num = %d", num);

    return 0;
}

🖥 Program Output

Value of num = 100

📘 Explanation

Let's identify the tokens used in the above program:

Token Type	Example	Description
Keyword	int, return	Reserved words with predefined meanings in C.
Identifier	main, num, printf	Names given to variables, functions, and other user-defined entities.
Constant	100	A fixed value that does not change during program execution.
Operator	=	Used to perform operations on variables and values.
Special Symbols	{ }, ( ), ;	Symbols that help define the structure of a C program.

In this program, the statement int num = 100; contains multiple tokens. Here, int is a keyword, num is an identifier, = is an operator, 100 is a constant, and ; is a special symbol. Together, these tokens form a valid C statement that the compiler can understand and execute.

🎯 How to learn from this example

First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.

🔥 Practice suggestion

Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.