A function template allows a function to accept parameters with different data types
A function can take parameters of various data types thanks to a function template. You may build a single function definition that is compatible with several distinct data types by using function templates. the function produced from a function template by the compiler (generic function). The compiler will create an int function when we compile this code by using a reference from the template function. One or more type parameters can be specified in a class template and utilised throughout the class as needed. The template-parameters of the class template must come first, followed by the template-parameters of the member template, when specifying a member template of a class template that is defined outside of its class template specification. Why is a class template's code typically contained in a separate header file
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