C program to Implement Array | Traversal | Insertion | Deletion |with simple code

ARRAY:- array is collection of similar data types TRAVERSAL:- Visiting every element of an array once, called traversal operation INSERTION :- An element can be inseted in an array at a specified position is called Insertion operation, DELETION :- The process to remove the element for array calls deletion operation

 
// write a program in c to implement array and
// its operation 1. traversal 2. insertion
// 3.deletion
#include<stdio.h>
int main () 
 { int size, i,a[100], pos, element ,num;
     printf("Enter the size of array \n");
    scanf("%d", &size);
    printf("Enter the element:-\n");
    for(i=0; i<size; i++)
    {
        scanf("%d", &a[i]);
    }

    printf("your element is: ");
    for(i=0; i<size; i++)
    {
        printf("%d  ", a[i]);
    } 

    printf("\nplease press : \n 1 :- for Insertion \n 2 :- for Deletion\n");
    scanf("%d",&num);
    
   switch (num)
   {
   case 1: 
    printf("Enter the position \n");
    scanf("%d", &pos);
    printf("Enter the  element to insert \n ");
    scanf("%d", &element);
    for(i=size;i>pos; i--)
    {
        a[i]=a[i-1];
    } 
    a[pos]=element;
    size ++;
    printf("your element is \n");
    for(i=0; i<size; i++)     
    {
        printf("%d ", a[i]);
    }
       break; 

    case 2: 
     printf("\nEnter the position to remove \n");
    scanf("%d", &pos);
    for(i=pos;i<size-1;i++)
    {
        a[i]=a[i+1];
    }
    size--;
    printf("your element is \n");
    for(i=0; i<size; i++)
    {
        printf("%d ", a[i]);
    }
       break;
   
   default:
   printf("You have entered wrong choice ...\n");
       break;
   }
    return 0;
  } 

When the above program is executed, it produces following results -
OUTPUT :- 1 FOR INSERTION

   Enter the size of array 
  5
  Enter the element:-
  11
  30
  9
  26
  45
  your element is: 11  30  9  26  45  
  please press : 
   1 :- for Insertion 
   2 :- for Deletion
  1
  Enter the position 
  3
  Enter the  element to insert 
   66
  your element is 
  11 30 9 66 26 45

OUTPUT:- 2 FOR DELETION

   Enter the size of array 
  5
  Enter the element:-
  12  
  30
  45
  11
  9
  your element is: 12  30  45  11  9  
  please press : 
   1 :- for Insertion 
   2 :- for Deletion
  2

  Enter the position to remove 
  3
  your element is 
  12 30 45 9