C program to delete an element in an array

1. Declaration and Initialization:
   • Declare an integer array arr.
   • Declare variables i and pos to be used in the program.
2. User Input:
   • Prompt the user to enter elements into the array.
3. User Input for Deletion:
   • Ask the user to enter the index at which they want to delete an element.
4. Deletion Process:
   • Check if the entered position is valid.
   • If valid, perform the deletion by shifting elements after the specified index.
   • Display the modified array after deletion.

C program to delete an element in an array

#include <stdio.h>

void main(){
    int arr[2], i, pos;

    printf("Enter the elements in the array: \n");

    for (int i = 0; i < 2; i++)
    {
        scanf("%d",&arr[i]);
    }
    printf("Enter the index at which you want to delete: ");
    scanf("%d",&pos);

    if(pos < 0 || pos > 2)
    {
        printf("Invalid position!");
    }
    else
    {
        for(i=pos-1; i<2; i++)
        {
            arr[i] = arr[i + 1];
        }

        printf("\nElements of array after deletion are : ");
        for(i=0; i<1; i++)
        {
            printf("%d\t", arr[i]);
        }
    }
}

Explanation

1. The program declares an integer array arr of size 2 and variables i and pos.
2. It prompts the user to enter two elements for the array.
3. The user is asked to enter the index (pos) at which they want to delete an element.
4. If the entered position is invalid (less than 0 or greater than 2), it prints “Invalid position!”.
5. If the position is valid, it performs deletion at the specified index, shifts the remaining elements, and displays the modified array.