## 1. Data Structure Program | Read Now

Data Structure LAB program -01

• Design, Develop and Implement a menu-driven Program in C for the following Array operations
1. Creating an Array of N Integer Elements
2. Display of Array Elements with Suitable Headings
3. Inserting an Element (ELEM) at a given valid Position (POS)
4. Deleting an Element at a given valid Position(POS)
5. Exit.
• Support the program with functions for each of the above operations.

## Program 1 Code [array.c]

Save the file with .c extension

```#include<stdio.h>
#include<stdlib.h>

int a[10],n,elem,i,pos;
void create();
void display();
void insert();
void delete();

void create()
{
int i;
printf("Enter the size of array\n");
scanf("%d",&n);
printf("Enter the elements of array\n");
for(i=0; i<n; i++)
scanf("%d",&a[i]);
}

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

void insert()
{
int i;
printf("Enter the position for new element:\n");
scanf("%d",&pos);
printf("Enter the element to be inserted:\n");
scanf("%d",&elem);
for (i = n-1; i <=pos; i--)
a[i+1]=a[i];
a[pos]=elem;
n=n+1;
}

void delete()
{
printf("Enter  position of element to be deleted:\n");
scanf("%d",&pos);
elem=a[pos];
for (int i = 0; i < n-1; i++)
a[i]=a[i+1];
n=n-1;
printf("Deleted element is %d\n",elem );
}

int main()
{
int ch;
while(ch)
{
printf("1.Create\n2.Display\n3.Insert\n4.Delete\n5.Exit\n");
scanf("%d",&ch);
switch(ch)
{
case 1:create();break;
case 2:display();break;
case 3:insert();break;
case 4:delete();break;
case 5:exit(0);break;
default :printf("INVALID CHOICE\n");
}
}return 0;

}
```

## Data Structure -How to Run this Program

• Step-1: Copy the above code
• Step-2: Paste it in any C compiler [Codeblocks/Dev C++/ VsCode etc]
• Step-3: Save the file name with .C extension
• Step-4: Compile the program
• Step-5: Run the program
• Step-6: Program Execution Successful