/*  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 main()
{

float x[10];
int i,n;

void swap34(float *ptr1, float  *ptr2 ); /* Function Declaration */

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);
}

swap34(x+2, x+3);      /* Function call:Interchanging 3rd element by 4th */

printf(“\nResultant Array…\n”);
for(i=0;i<n;i++)
{
printf(“X[%d] = %f\n”,i,x[i]);
}
}     /* End of main() */

/* Function to swap the 3rd element with the 4th element in the array */

void swap34(float *ptr1, float *ptr2 )      /* Function Definition */
{
float temp;

temp   = *ptr1;
*ptr1  = *ptr2;
*ptr2  = temp;
}                                            /* End of Function */

/*——————————————-
Output
How many Elements…
10
Enter Elements one by one
10
20
30
40
50
60
70
80
90
100

Resultant Array…
X[0] = 10.000000
X[1] = 20.000000
X[2] = 40.000000
X[3] = 30.000000
X[4] = 50.000000
X[5] = 60.000000
X[6] = 70.000000
X[7] = 80.000000
X[8] = 90.000000
X[9] = 100.000000
—————————————————-*/

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