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C > Arrays and Matrices Code Examples

Program to Accept an Array & Swap Elements using Pointers

Program to Accept an Array & Swap Elements using Pointers

 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 j, n;
     

        printf("How many Elements...\n");

        scanf("%d", &n);

        printf("Enter Elements one by one\n");

        for (j = 0; j < n; j++)

        {

            scanf("%f", x + j);

        }

        /*  Function call:Interchanging 3rd element by 4th */

        swap34(x + 2, x + 3);

        printf("\nResultant Array...\n");

        for (j = 0; j < n; j++)

        {

            printf("X[%d] = %f\n", j, x[j]);

        }

    }

    /*  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;

    }

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