What is the difference between declaring and initializing variable?

What is the difference between declaring and initialization of variable?

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What is variable declaration give one example of it?

Variable of Declaration:-

To create the name of variable is called variable declaration.

Syntax:- datatype variable;

For example-

int num;

here int is a datatype and num is a variable.

Variable of Initialization:-

To assign value in a variable is called variable initialization.

There are two types of variable initialization--

Compile Time Initialization or Static Initialization.
Run Time Initialization or Dynamic Initialization.

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What is variable initialization in C with example?

Compile Time Initialization or Static Initialization

When we assign value at program design time is called compile time initialization. It has fixed value. It can't be change at run time.

For example:-

#include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

int num=200;

printf("%d",the value of num);

getch();

}

Run Time Initialization or Dynamic Initialization

To assign value at run time from user is called run time initialization. For this purpose we use scanf() function in C language. For example-

#include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

int num;