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Tuesday 23 July 2013

C program to find the first and last element of an array

Write a C program to print the first and last element of an array.


  #include <stdio.h>
  #define MAXLIMIT 256

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

        /* get the number of elements in the input array */
        printf("Number of elements in your input array:");
        scanf("%d", &n);

        /* boundary check to avoid stack overrun */
        if (n > MAXLIMIT || n < 0) {
                printf("Boundary Exceeded!!\n");
                return 0;
        }

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

        /* printing the contents of the input array */
        printf("\nContents of the input array:\n{");
        for (i = 0; i < n; i++) {
                printf("%d, ", array[i]);
        }
        printf("\b\b}\n");

        /* printing first and last element in the given array */
        printf("\nFirst Element of the given array: %d\n", array[0]);
        printf("Last Element of the given array:%d\n", array[n -1]);
        return 0;
  }



  Output:
  jp@jp-VirtualBox:~/$ ./a.out
  Number of elements in your input array:4
  Array[0]: 10 
  Array[1]: 20
  Array[2]: 30
  Array[3]: 40

  Contents of the input array:
  {10, 20, 30, 40}   
  
  First Element of the given array: 10
  Last Element of the given array:40


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