Question

Write a function template that is capable of adding any two numeric values and returning the result.

Short answer

**Answer:** To create a generic function template in C++ to add any two numeric values and return the result, we need to follow these steps: 1. Use the `template ` syntax to define a function template. 2. Define the function with a name, e.g., `addNumbers`, and two parameters of the generic type `T`, e.g., `T num1` and `T num2`. 3. Inside the function, perform the addition of `num1` and `num2` and store the result in a variable, e.g., `T sum = num1 + num2`. 4. Return the result, e.g., `return sum`. Here is the example function template to add two numeric values: ```cpp template T addNumbers(T num1, T num2) { T sum = num1 + num2; return sum; } ```

Step-by-step solution

Choose a programming language and compile the code.

For this problem, we are going to use C++ as our programming language. Make sure you have a C++ compiler installed on your computer and you are familiar with running C++ programs.

Create a function template.

To create a generic function in C++, we use templates. Here's the syntax to create a function template: ``` template T functionName(T parameter1, T parameter2) { // Function logic } ``` In our case, let's create a function template called `addNumbers()`: ```cpp template T addNumbers(T num1, T num2) { // Function logic } ```

Implement the logic for addition in the function.

Now we need to add the given parameters and return the result. For this, we simply perform the addition of `num1` and `num2`, store the result in a variable `sum`, and return it. ```cpp template T addNumbers(T num1, T num2) { T sum = num1 + num2; return sum; } ```

Test the function template.

To test the function for different numeric data types, we need to call it with different data types as arguments. ```cpp #include template T addNumbers(T num1, T num2) { T sum = num1 + num2; return sum; } int main() { int num1 = 5, num2 = 10; double num3 = 3.5, num4 = 4.5; long long num5 = 10000000, num6 = 20000000; std::cout << "Int sum: " << addNumbers(num1, num2) << std::endl; std::cout << "Double sum: " << addNumbers(num3, num4) << std::endl; std::cout << "Long sum: " << addNumbers(num5, num6) << std::endl; return 0; } ``` Upon running the above code, the function template will work for 3 different numeric types, calculating the sum and displaying it on the console. We achieved the goal of creating a generic function to add two numeric values and return the result.