Array in C:-

Array in C is a variable that can hold more than one similar type of element. It is sequential in nature.

Array in C

To declare an array it requires the type of element and the number of elements required by an array.

Type arrayname[arraysize];

Ex:- int p[5];

In c we can initialize of an array by individually and by a statement.

Ex:-

Int p[5]={1,2,3,4,5};

To initialize a single element of an array

As per the previous example:-

Int p[4]=5;

The array name is a constant pointer which gives the address of the 0th element of an array
Limitation of an array is

a) Unused memory of an array can’t be used

b) Array size can’t be changed in run time

One array can’t be assigned to another array, because both are a constant pointer.
Turbo C does not allow zero-length array size but GCC allows zero-length and variable-length array size.
The size of the zero-length array size is 0
One array can not directly copy to another array by just equating two.
Array name can not be incremented and decremented, because it is a constant pointer.
Malloc memory allocation is single dimensional array equivalent and calloc memory allocation is double dimensional array equivalent
The major difference between strcpy and strncpy is strcpy copy the whole string includes null character but strncpy does not copy null character.
A double dimensional array is a collection of the single-dimensional array, where every single dimensional array must be used for a different purpose
Visiting double dimensional array in row-major is always faster than column-major.
Array name + 1 = Address of next element if it is single dimensional array
Array name + 1 = Address of next array if it is double dimensional array
To get the address of any element of a double array use
Address = base address+(row number * row size + col number) + size of element
The array can be represented as a subscript and pointer format.

Program to access each element of an array:-

main()

{

int p[5]={1,2,3,4,5};

int i;

for(int i=0;i<5;i++)

{

printf("%d",p[i]);

}

}

O/P=1 2 3 4 5

Array in C