01.ArrayOperations.c

/*
1 Design, Develop and Implement a menu driven Program in C for the
following Array operations
a. Creating an Array of N Integer Elements
b. Display of Array Elements with Suitable Headings
c. Inserting an Element (ELEM) at a given valid Position (POS)
d. Deleting an Element at a given valid Position(POS)
e. Exit.
Support the program with functions for each of the above operations
*/

#include <stdio.h>
#include <stdlib.h>
#define size 20

void insert(int arr[], int *n);
void delete (int arr[], int *n);
void display(int arr[], int n);

void main()
{
	int arr[size], i, n, ch;
	printf("Enter Initial size of Array\n");
	scanf("%d", &n);
	printf("Enter Array Elements\n");
	for (i = 0; i < n; i++)
		scanf("%d", &arr[i]);
	for (;;)
	{
		printf("\nMenu\n");
		printf("1. Insert\n2. Delete\n3. Display\n4. Exit\n");
		scanf("%d", &ch);
		switch (ch)
		{
		case 1:
			insert(arr, &n);
			break;
		case 2:
			delete (arr, &n);
			break;
		case 3:
			display(arr, n);
			break;
		case 4:
			exit(0);
		}
	}
}

void insert(int arr[], int *n)
{
	int i, pos, ele;
	printf("Enter Element\n");
	scanf("%d", &ele);
	printf("Enter Position\n");
	scanf("%d", &pos);
	for (i = (*n) - 1; i >= pos - 1; i--)
	{
		arr[i + 1] = arr[i];
	}
	arr[pos - 1] = ele;
	*n = *n + 1;
}

void delete (int arr[], int *n)
{
	int i, pos;
	printf("Enter the Position to delete the element\n");
	scanf("%d", &pos);
	for (i = pos - 1; i < (*n) - 1; i++)
	{
		arr[i] = arr[i + 1];
	}
	*n = *n - 1;
}

void display(int arr[], int n)
{
	int i;
	for (i = 0; i < n; i++)
		printf("%d ", arr[i]);
	printf("\n");
}