Make sure you're actually linking with the math library. For instance, due to a longstanding bug in Unix and Linux systems, you usually need to use an explicit -lm flag, at the end of the command line, when compiling/linking.
What is a Null object in C++?
What do you mean by Stack unwinding in C++?
What are proxy objects in C++?
What is a node class in c++?
Name some pure object oriented languages?
What is an orthogonal base class in C++?
What is a container class? What are the types of container classes in C++?
How do you write a function that can reverse a linked-list in C++?
What is polymorphism in C++?
How can you tell what shell you are running on UNIX system?
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