Arrays An array is a derived data type

Arrays An array is a derived data type. It is used to store homogeneous data items in contiguous memory location.

Types of Array • 1 - Dimentional • N-Dimentional

One Dimentional Array Syntax data_type array_name[size of array / index]; Example : int a[5]; Here ‘a’ is declared as an array of int data type that is capable of storing 5 integer values naming from a[0] to a[4]. a[0] a[1] 23 12 a[2] -10 a[3] 4 a[4] 37

Two-Dimentional Array Syntax data_type a_name[row size][column size]; Example : int m[2][3]; Here ‘m’ is an 2 -D array of int type that is capable of storing 6 different integer values in 2*3 matrix form.

int m[2][3] m[0][0] 45 -12 m[1][0] m[0][1] -98 m[0][2] 23 0 m[1][1] 5 m[1][2]

Array Initialization It can be performed in two ways a) Initialization During Declaration b) Initialization After Declaration

Initialization During Declaration Example int a[5]= { 4, -7, 10, 8, 12 }; Here compiler will automatically assign a[0]=4, a[1]= -7, a[2]= 10, a[3]= 8, a[4]= 12

Initialization After Declaration It can be done in two ways a) Initializing values from user without loop b) Initializing values from user with loop

Initializing values without loop Example int a[5]; printf(“n Enter 5 integer values…”); scanf(“ %d %d %d”, &a[0] , &a[1] , &a[2] , &a[3] , &a[4]);

Initializing values from user with loop \ WAP to input 5 number from user and print void main() { int i=0, a[5]; printf(“n. Enter 5 integer values…”); for(i=0; i<5 ; i++) { scanf(“%d “, &a[i] ); } printf(“n The Entered values are…”); for(i=0; i<5 ; i++) { printf(“n%d “, a[i] ); } getch(); }