Sunday, 24 July 2016

Program to Delete an Element from an Array at Valid Position

Write program to Delete an Element from an Array at Valid Position

#include<stdio.h>
#include<stdlib.h>
#define MAX 5
int a[MAX], pos, elem;
int n = 0;
void create();
void display();
void delete();

void main()
{
                int i;
                printf("\nEnter the number of elements: ");
                scanf("%d", &n);
                if(n!=0)
                                printf("\nEnter the elements: ");
                                for(i=0; i<n; i++)
                                {
                                                scanf("%d", &a[i]);
                                }
                delete();
                display();
}

void display()
{
                int i;
                if(n == 0)
                {
                                printf("\nNo elements to display");
                                return;
                }
                printf("\nArray elements are: ");
                for(i=0; i<n;i++)
                                printf("%d\t ", a[i]);
}

void delete()
{
                int i;
                if(n == 0)
                {
                                printf("\nArray is empty and no elements to delete");
                                return;
                }

                do
                {
                                printf("\nEnter a valid position from where element to be deleted:    ");
                                scanf("%d", &pos);
                }while(pos>=n);
               
                elem = a[pos];
                printf("\nDeleted element is : %d \n", elem);
                for( i = pos; i< n-1; i++)
                {
                                a[i] = a[i+1];
                }
                n = n-1;
}

Output:
Case 1:
Enter the number of elements: 0
Array is empty and no elements to delete
No elements to display

Case 2:
Enter the number of elements: 3
Enter the elements: 11             12           13
Enter a valid position from where element to be deleted:    6
Enter a valid position from where element to be deleted:    1
Deleted element is : 12
Array elements are: 11    13