Which of the following WHERE clause operators tests whether two values are not equal?

The addition of an item to an empty queue is a special case.

What will be an ideal response?

What is wrong with the following for loop?

for(int i=0;i<10;i--) { cout << "Hello\n"; } a. can not use a for-loop for this b. i is not initialized c. infinite loop d. off-by-one error