C Exercises: Insert New value in the array (unsorted list )

Last update on March 18 2025 13:21:36 (UTC/GMT +8 hours)

14. Insert in Unsorted Array

Write a program in C to insert values in the array (unsorted list).

Visual Presentation:

C Exercises: Insert New value in the array (unsorted list )

Sample Solution:

C Code:

#include <stdio.h>

void main()
{
    int arr1[100], i, n, p, x;

    // Prompt user for input
    printf("\n\nInsert New value in the unsorted array:\n ");
    printf("-----------------------------------------\n");
    printf("Input the size of array : ");
    scanf("%d", &n);

    // Input values for the array
    printf("Input %d elements in the array in ascending order:\n", n);
    for (i = 0; i < n; i++)
    {
        printf("element - %d : ", i);
        scanf("%d", &arr1[i]);
    }

    // Input the value to be inserted and its position
    printf("Input the value to be inserted : ");
    scanf("%d", &x);
    printf("Input the Position, where the value to be inserted :");
    scanf("%d", &p);

    // Display the current list of the array
    printf("The current list of the array :\n");
    for (i = 0; i < n; i++)
        printf("% 5d", arr1[i]);

    // Move all data to the right side of the array to make space
    for (i = n; i >= p; i--)
        arr1[i] = arr1[i - 1];

    // Insert the new value at the given position
    arr1[p - 1] = x;

    // Display the array after insertion
    printf("\n\nAfter Insert the element the new list is :\n");
    for (i = 0; i <= n; i++)
        printf("% 5d", arr1[i]);
    printf("\n\n");
}

Sample Output:

Insert New value in the unsorted array :                                                                      
 -----------------------------------------                                                                    
Input the size of array : 4                                                                                   
Input 4 elements in the array in ascending order:                                                             
element - 0 : 1                                                                                               
element - 1 : 8                                                                                               
element - 2 : 7                                                                                               
element - 3 : 10                                                                                              
Input the value to be inserted : 5                                                                            
Input the Position, where the value to be inserted :2                                                         
The current list of the array :                                                                               
    1    8    7   10                                                                                          
                                                                                                              
After Insert the element the new list is :                                                                    
    1    5    8    7   10

Flowchart:

For more Practice: Solve these Related Problems:

Write a C program to insert an element at a specified position in an unsorted array and then display the array.
Write a C program to insert an element into an unsorted array and then sort the array.
Write a C program to insert an element in an unsorted array without using an extra array.
Write a C program to insert multiple values at specified positions in an unsorted array.

C Programming Code Editor:

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