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Declaration of array in crograms
Array is continuous memory allocation of a same data types. If you have a data of same datatype than you can use an array.Array is used to store similar types of data.In array all elements
store in continuous memory.
If you have a lots of books and you want to store the data of that books than you can not use the different variables for store the data of books in that situation you can use array.
Declaration Of Array:
Array is always declared with integer and float datatype.
ex. int a[5]. where int is datatype of the array and [a] is name of the array and [5] is size of the array.
This image is pictorial look of the array.
Array is always start with 0th index.
The above array is stored in memory as:
a[0]:10
a[1]:11
a[2]:40
a[3]:10
a[4]:11
Types Of Array:
Their are two types of array.
1.Single dimensional Array
2.Multi dimensional Array
1.Single dimensional Array
Array having a only one value is called single dimensional array. It is also called one dimensional array.It stores the elements in a linear form.
Ex. int a[5];
The following example is used to understand the single dimensional array concept briefly.
#include<stdio.h>
#include<conio.h>
void main()
{
int book[5]; //declaration af array.
clrscr();
printf("Enter the elements");
for(i=0; i<=4; i++) //take input and store the value of an array
{
scanf("%d",&a[i]);
}
printf("The array elements are:-")
for(i=0; i<=4; i++) // To display the array elements
{
printf(%d \n ",book[i];
}
getch();
}
2.Multi dimensional Array
Array having more than one subscript value is called multi dimensional array. Multi dimensional array is also called two dimensional array or matrix.
Ex. int a[5][5];
The following example is used to understand the single dimensional array concept briefly.
#include<stdio.h>
#include<conio.h>
void main()
{
int books[5][5];
clrscr();
printf("Enter the value of matrix:");
for(i=0; i<=4; i++) //Takin input from user.
{
for(j=0; j<=4; j++)
{
scanf("%d, &book[i][j]);
}
}
printf("The entered array element is:");
for(i=0; i<=4; i++)
{
for(j=0; j<=4; j++)
{
printf(%d \n", books[i][j]);
}
}
getch();
}
