engineering computer science MCQ #2171

engineering computer science MCQ #2171

1. Question 1

   Q1. What is the purpose of `extern` keyword in C?

   • A) To declare a global variable
   • B) To define a global variable
   • C) To declare a function
   • D) To make a variable constant

   Answer: To declare a global variable

   Explanation: extern declares a global variable or function that is defined elsewhere. NET computer science MCQs often test this core concept.