C programming quiz

Which is not a valid operator?

• +

• >>

• ,

• #

which is not a datatype?

• str

• integer

• float

• structure

What is the time complexity of binary search?

• O(n^2)

• O(n)

• O(nlogn)

• O(logn)

Find the output of the following code?

• 625

• 407

• 325

• None

Which of these statement will give error?

• printf("hello");

• sizeof int

• x+++1

• *ptr++

Find output.

• 32

• 35

• 20

• None

which is not a valid array declaration in C?

• arr[][][3]={1,2,3,4,5};

• arr[50] = {1,2,3,4,5}

• arr[][2];

• arr[1] = {10,20,30};

What does this statement do?

int *ptr[50];

• Creates a pointer to an array of size 50 that will contain integers

• Creates an array of pointers with size 50 in which each pointer points to an integer

• Creates a integer point that points to 50 blocks in memory

• Error

Find output

• 25

• 25 23 21 ... 1

• infinite loop

• None

Find the output

• 6

• Garbage value

• 5

• None