Arrays

September 10, 2020

Arrays

Array is a linear data structure. It is a collection of items stored at contiguous memory locations and elements can be accessed randomly using indices of an array.

One-Dimensional Arrays

A one -dimensional array is a group of elements having same datatype and same name.

/*Program which will input the price of 5 items.
Calculate the total price
and apply a discount of 10% on the total amount. Display the final amount and amount after
discount.*/
#include<stdio.h>
#include<math.h>
int main()
{
    int itemprice[5],tp=0,dp,fAD,i;
    printf("Enter price of 5 items:");
    for(i=0;i<5;++i){
    	scanf("%d",&itemprice[i]);
	}
	for(i=0;i<5;i++){
		tp = tp + itemprice[i];
	}
		printf("Final amount : %d",tp);
		dp = tp * 0.10;
		fAD = tp - dp;
		printf("\nFinal amount after discount: %d", fAD);
		return 0;
}

Output:

Enter price of 5 items:5
10
20
50
25
Final amount : 110
Final amount after discount: 99

Two-Dimensional Arrays

Multi-Dimensional Arrays

C allows to create array of array known as multidimensional arrays.

Initialization of Multidimensional Arrays

It can be initialized in different ways.

For example:

int arr1[2][3] = {
	{1,3,0},
	{5,6,9}
	};

	or

int arr[][3]={
	{1,3,0},
	{5,6,9}
};

  or

int arr[2][3] = {1,3,0,6,5,8};

Basic Operations on One-dimensional Arrays

Searching
Insertion
Deletion
Traversal
Sorting
Merging