engineering computer science MCQ #2130

engineering computer science MCQ #2130

1. Question 1

   Q1. What is the purpose of `volatile` keyword?

   • A) To optimize variable access
   • B) To inform the compiler that a variable's value can change unexpectedly
   • C) To declare a constant
   • D) To allocate memory on the heap

   Answer: To inform the compiler that a variable's value can change unexpectedly

   Explanation: Volatile keyword tells the compiler to always read a variable's value from memory, not from a register.