Question: I need the answer in C++ language 21. Write a function that takes an integer and checks whether it is a prime number or not.

I need the answer in C++ language

21. Write a function that takes an integer and checks whether it is a prime number or not. If the number is a prime number, the function returns true, otherwise it returns false. A number is said to be a prime number if it is divisible by only 1 and itself

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