C Language Progarm for Copy One Array Elements into Another Array in Desired Position

Algorithm Steps: 

Step 1: Create Two arrays with same size.

Step 2: Read the Array elements using the function getIntArray.

Step 3: Print the Array using printIntArray.

Step 4: Copy the Array using function cpIntArray.

Step 5: Print the Array using cpIntArray.

#include <stdio.h>

#define SIZE 8

void cpIntArray(int *a, int *b, int n)

/*It copies n integers starting at b into a*/

{

  for(;n>0;n--)

    *a++=*b++;

}

void printIntArray(int a[], int n)

     /* n is the number of elements in the array a.

      * These values are printed out, five per line. */

{

  int i;

  for (i=0; i<n; ){

    printf("\t%d ", a[i++]);

    if (i%5==0)

      printf("\n");

  }

  printf("\n");

}

/* It reads up to nmax integers and stores then in a; sentinel

      * terminates input. */

int getIntArray(int a[], int nmax, int sentinel)

 {

          int n = 0;

         int temp;

    do {

                printf("Enter integer [%d to terminate] : ", sentinel);

                 scanf("%d", &temp);

                if (temp==sentinel) break;

               if (n==nmax)

               printf("array is full\n");

           else

                a[n++] = temp;

        }while (1);

        return n;

}

int main(void)

{

                 int x[SIZE], nx;

                 int y[SIZE], ny;

                   printf("Read the x array:\n");

                nx = getIntArray(x,SIZE,0);

                  printf("The x array is:\n");

                 printIntArray(x,nx);

                printf("Read the y array:\n");

               ny = getIntArray(y,SIZE,0);

              printf("The y array is:\n");

              printIntArray(y,ny);

             cpIntArray(x+2,y+3,4);

  /*Notice the expression 'x+2'. x is interpreted as the address for

    the beginning of the x array. +2 sais to increment that address

    by two units, in accordance with the type of x, which is

    an integer array. Thus we move from x to two integer locations

    past it, that is to the location of x[2]. The same reasoning applied

    to 'y+3'.

    */

  printf("Printing x after having copied 4 elements\n"

         "from y starting at y[3] into x starting at x[2]\n");

  printIntArray(x,nx);

}

Sample Output :
Read the x array:
Enter integer [0 to terminate] : 1
Enter integer [0 to terminate] : 3
Enter integer [0 to terminate] : 5
Enter integer [0 to terminate] : 7
Enter integer [0 to terminate] : 9
Enter integer [0 to terminate] : 11
Enter integer [0 to terminate] : 13
Enter integer [0 to terminate] : 15
Enter integer [0 to terminate] : 0
The x array is:
            1          3          5          7          9
            11        13        15
Read the y array:
Enter integer [0 to terminate] : 2
Enter integer [0 to terminate] : 4
Enter integer [0 to terminate] : 6
Enter integer [0 to terminate] : 8
Enter integer [0 to terminate] : 10
Enter integer [0 to terminate] : 12
Enter integer [0 to terminate] : 14
Enter integer [0 to terminate] : 16
Enter integer [0 to terminate] : 0
The y array is:
            2          4          6          8          10
            12        14        16
Printing x after having copied 4 elements
from y starting at y[3] into x starting at x[2]
            1          3          8          10        12
            14        13        15

Contact:

Mr. Roshan P. Helonde

Mobile: +91-7276355704

WhatsApp: +91-7276355704

Email: roshanphelonde@rediffmail.com