Exploring 1D Array Loops

What is a 1D array?

• A 1D array is a linear collection of elements accessed by a single index.

• A 1D array requires multiple indices to access elements.

• A 1D array can only store integers.

• A 1D array is a two-dimensional structure.

Write a loop to print all elements of a 1D array of length N in C

• int i = 1;

  while( i <N) { printf("%d\n",array[i]); }

• int i = 0;

  while(i < N) { printf("%d",array[i++]); }

• for(int i = 0; i < N; i++ ) { printf("%d\n",array[i]); }

• for(int i = 0; i <= N; i++ ) { printf("%d\n",array[i]); }

How can you find the length of a 1D array in C?

• length = sizeof(array) / sizeof(array[0])

• length = count(array)

• length = array.length()

• length = sizeof(array)

What will be the output of the following code snippet: int arr[] = {1, 2, 3}; for(int i=0; i<3; i++) { printf("%d ", arr[i]); }?

• 1 2 3

• 3 2 1

• 1 2

• 2 3 4

void checkEvenOrNot(int num)

{

    if (num % 2 == 0)

        goto even;

else

       goto odd;

  

even:

    printf("%d is even", num);   return;

odd:

    printf("%d is odd", num); }

  

int main()

{

    int num = -2;

    checkEvenOrNot(num);

    return 0;

}

Output

• error

• -2 is even

• -2 is odd

• none of the above