/*This C Program accepts array & swap elements using pointers. The program is used to swap the elements of a given array and swapping is done using pointers.*/

/*
 * C program to accept an array of 10 elements and swap 3rd element
 * with 4th element using pointers and display the results.
 */
#include <stdio.h>
void swap34(float *ptr1, float *ptr2);

void main()
{
    float x[10];
    int i, n;
    printf("How many Elements...\n");
    scanf("%d", &n);
    printf("Enter Elements one by one\n");
    for (i = 0; i < n; i++)
        {
            scanf("%f", x + i);
        }
    /*  Function call:Interchanging 3rd element by 4th */
    swap34(x + 2, x + 3);
    printf("\nResultant Array...\n");
    for (i = 0; i < n; i++)
        {
            printf("X[%d] = %f\n", i, x[i]);
        }
}
/*  Function to swap the 3rd element with the 4th element in the array */
void swap34(float *ptr1, float *ptr2 )
{
    float temp;
    temp = *ptr1;
    *ptr1 = *ptr2;
    *ptr2 = temp;
}

/*

How many Elements...
4
Enter Elements one by one
23
67
45
15

Resultant Array...
X[0] = 23.000000
X[1] = 67.000000
X[2] = 15.000000
X[3] = 45.000000