What is the purpose of the 'volatile' keyword when used with a function in C?
A. To make the function execute faster
B. To specify that the function is unpredictable
C. To optimize the function
D. To indicate that the function may change external variables
Answer: Option D
Related Questions on Function
In C, what is a function primarily used for?
A. Decision making
B. Variable declaration
C. Code organization and reusability
D. Printing output
What is the purpose of a function prototype in C?
A. To declare a function's return type
B. To declare a function's name
C. To declare a function's parameters and return type
D. To declare a function's name and parameters
In C, how are function arguments passed by default?
A. By value
B. By reference
C. By pointer
D. By address
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