Question

Choose the correct snippet from the following to check if the variable "a" is not equal the "NULL":

a) if(a!==null)

b) if (a!)

c) if(a!null)

d) if(a!=null)

Answer 1

Answer: A

Reason: The "==" is only true if the type and the content of both operands are the same. The "==" is also one of the common abstracts used for comparing two operands to check whether they are equal or not but it will notcheck the data type of the variables. So, the "! ==" operator is known as "non-equal", which is used in our case, to compare 0 to NULL. It obtains the output either as true or false that totally depends on the given conditions.