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Swape Alternate Number In A Array


 

#include <stdio.h>

void display(int arr[], int size)
{
    // Traversal
    printf(" The array is : ");
    for (int i = 0; i < size; i++)
    {
        printf("%d ", arr[i]);
    }
    printf("\n");
}

int swap_array(int arr[], int size)
{
    for (int i = 0; i < size; i += 2)
    {
        if (arr[i] < size)
        {
          int first = arr[i];
            //int second = arr[i + 1];
            arr[i] = arr[i + 1];// second;
            arr[i + 1] = first;
        }
    }
}

int main()
{
    int arr[] = {1, 2, 3, 4, 5, 6};
    int size = sizeof(arr) / sizeof(int);
    swap_array(arr, size);
    display(arr, size);
    return 0;
}

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