Question 4f. Provide the output of the following C++ code?       #include   using namespace std;   template   T multIt(T x)   {   for(int ii = 0; ii < count; ii++)   {   x = x * x;   }   return x;   };   int main()   {   float xx = 2.1;   cout << xx << ": " << multIt<>(xx) << endl;   }

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Header files

A file with an extension that has some predefined declarations and definitions is called a header file. Every computer program imports a set of header files to perform common tasks such as getting input, displaying output, and so forth. Every language has different header files (such as C, JAVA, Python, and C++). In this article, header files are explained mainly in the context of the C/C++ language.