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Wednesday, 24 July 2013

C program to print the elements at the odd and even positions in an array

Write a C program to print the elements at the odd and even positions in an array.


  #include <stdio.h>
  #define MAXLIMIT 256

  int main() {
        int arr[MAXLIMIT], i, n;

        /* get the number of elements from the user */
        printf("Enter the number of elements:");
        scanf("%d", &n);

        /* boundary check */
        if (n > MAXLIMIT || n < 0) {
                printf("Bourndary Level Exceeded!!\n");
                return 0;
        }

        /* get array elements from the user */
        printf("Enter your Array Inputs:\n");
        for (i = 0; i < n; i++) {
                printf("Data[%d]: ", i);
                scanf("%d", &arr[i]);
        }

        /* printing the elements at the even position */
        printf("Elements at the even position:\n");
        for (i = 0; i < n; i++) {
                if (i % 2 == 0)
                        printf("%d ", arr[i]);
        }

        /* printing the elements at the odd position */
        printf("\n\nElements at the odd position:\n");
        for (i = 0; i < n; i++) {
                if (i % 2 != 0)
                        printf("%d ", arr[i]);
        }

        printf("\n");
        return 0;
  }



  Output:
  jp@jp-VirtualBox:~/$ ./a.out
  Enter the number of elements:5
  Enter your Array Inputs:
  Data[0]: 1
  Data[1]: 2
  Data[2]: 3
  Data[3]: 4
  Data[4]: 5
  Elements at the even position:
  1  3  5 
  Elements at the odd position:
  2  4 


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