Arrays in C (original) (raw)

Which of the following correctly declares an array of 10 integers in C?

Which of the following statements about arrays is TRUE in C?

• Arrays can hold different data types.
• The size of an array can be changed during execution.
• An array stores elements of the same type in contiguous memory.
• Arrays are not supported in C.

What is the index of the first element in a C array?

What is the correct way to initialize all elements of an array to zero in C?

Which of the following is NOT a valid array declaration?

• int arr[3] = {1, 2, 3, 4};

What is the value of arr[1] after the following declaration?

C `

int arr[3] = {10};

`

What is true about partially initialized arrays in C?

• All elements must be initialized
• Uninitialized elements get garbage values
• Remaining elements are initialized to zero

Which of the following allows you to iterate over a C array using a pointer?

• for (int *p = arr; p <= arr + size; p++)
• for (int *p = arr; p < arr + size; p++)
• for (int p = arr; p < arr + size; p++)
• for (int p = &arr; p <= arr + size; p++)

What is the difference between int arr[5]; and int *arr = malloc(5 * sizeof(int));?

• The first is static, the second is dynamic
• The second doesn't allocate memory

What happens if you use sizeof on a pointer to an array?

• Gives size of first element

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