What is Variables in C Language - Digital College Library

What is the Variables in C Language ???

A Variables in C is a specifically defined area of memory where a value is stored. These values can come from of several data types, including characters, integers, and floating-point numbers. And it’s name show it’s value is changed during the execution of the program.

Let’s explore variables – How We Declare it, How we initializing the Variables and Assigning the values,

Step – 1 : Declaring a Variables

Declaring a variables is process which is used to specify the name and data type of the variables.

int num;

Here we write int num; which we used to declare an integer variable, with a name Variable “num”.

Step – 2 : Initializing a Variables

Initializing a Variables means giving a starting value to the variable. Like if you want initialize a value of variables is 0. Then we write,

num = 0;

Step – 3 : Assigning a Variables

Assigning a Variables meaning is the giving new value to the variables. And it is Writing anytime when execution of program. Like if I want to assign a “10” to “num” then we write,

num = 10;

Example: Variables

Let’s take an example of Variables to understand the Variables Declaration, Initialization, and Assigning.

#include <stdio.h>

int main() {
    // Variable Declaration
    int num;
    
    // Variable Initialization
    num = 0;
    
    // Variable Assignment
    num = 10;
    
    // Printing the value of variable
    printf("Value of num: %d\n", num);
    
    return 0;
}

C Language E-book

Explanation about Program

First, we declare a Integer Variable “int num”.
Second, we initialize a “num” with 0 and write this – “num = 0”.
Third, We assign a “num” with 10 and write this as like – “num = 10”, Final Value.
Lastly, Write a “printf(“Value of num: %d\n”, num);” – which is used to print a value of variable “num”.

What is the Variables in C Language ??? with Free Notes…