- A variable is one which stores some value and its value can be changed at any point of time.
- A name given to memory Location.
- A variable is also an identifier so rule for name identifier also applies here.
- A variable are a container and we are store to data by Alphabet form data or Number form data.
- Declaring a Variable: int a; , int a,b,c; , int a=10,b=20;
Type of Variable
- Integer Variable (int)
- Floating Variable (float)
- Double Variable (dou)
- Character Variable (char)
Declaration
How to use by a variable. A Variable are declare by two type Syntax in this form
- data_type variable_name;
- data_type variable_name = value ;
data_type variable_name;
#include<stdio.h>
#include<conio.h>
int main(){
int a;
printf(“Entre The Number “);
scanf(“%d”, &a);
printf(“\n a = %d”,a);
getch();
}
data_type variable_name = value ;
#include<stdio.h>
#include<conio.h>
int main(){
int a = 12;
printf(“\n a = %d”,a);
getch();
}
