Quiz of Array

Which of these best describes an array?

• Which of these best describes an array?

• Container of objects of similar types

• Arrays are immutable once initialised

• Array is not a data structure

How do you initialize an array in C?

• int arr[3] = (1,2,3);

• int arr(3) = {1,2,3};

• int arr[3] = {1,2,3};

• int arr[3] = {1,2,3};

Elements in an array are accessed

• randomly

• sequentially

• exponentially

• logarithmically

Which of the following operations is not O(1) for an array of sorted data. You may assume that array elements are distinct.

• Find the ith largest element

• Delete an element

• Find the ith smallest element

• All of the above

What is the output of C Program.? int main() { int a[]; a[4] = {1,2,3,4}; printf("%d", a[0]); }

• 1

• 2

• 4

• compile error

What is the output of C Program.? int main() { int a[] = {1,2,3,4}; int b[4] = {5,6,7,8}; printf("%d,%d", a[0], b[0]); }

• 1,5

• 2,6

• 0,0

• Compiler Error

What is the output of C program.? int main() { char grade[] = {'A','B','C'}; printf("GRADE=%d, ", *grade); printf("GRADE=%d", grade[0]); }

• A A

• 65 A

• 65 65

• None of the above

What is the output of C program.? int main() { int a[3] = {10,12,14}; int i=0; while(i<3) { printf("%d ", i[a]); i++; } }

• 14 12 10

• 10 10 10

• 10 12 14

• None of the above

What is an array Base Address in C language.?

• Base address is the address of 0th index element.

• An array b[] base address is &b[0]

• An array b[] base address can be printed with printf("%d", b);

• All the above

What is the output of C Program with arrays and pointers.? void change(int[]); int main() { int a[3] = {20,30,40}; change(a); printf("%d %d", *a, a[0]); } void change(int a[]) { a[0] = 10; }

• 20 20

• 10 20

• 10 10

• 20 30