Function templates are useful in situations where you have a generic algorithm or operation that can be applied to different types. Here are some scenarios where function templates areÂ beneficial:

**Type-independent operations**: If you have a function that performs an operation that is independent of the specific types involved, you can use a function template to create a generic version of the function. Examples include mathematical operations, comparisons, or utility functions.**Reusable code**: Function templates allow you to write code once and reuse it for different types, reducing code duplication and increasing maintainability.**Generic algorithms**: When implementing algorithms that can work with various data types, function templates provide a way to write the algorithm once and instantiate it for specific types as needed.**Containers and iterators**: Function templates are extensively used in the C++ Standard Library, particularly with containers and iterators. They allow you to write generic code that can work with different container types and iterate over them using a common interface.

Example:

```
// Function template for finding the maximum of two values
template <typename T>
T max(T a, T b) {
return (a > b) ? a : b;
}
int main() {
// Instantiates max<int>(int, int)
int intMax = max(5, 10);
// Instantiates max<double>(double, double)
double doubleMax = max(3.14, 2.71);
// Instantiates max<std::string>(std::string, std::string)
std::string strMax = max("hello", "world");
}
```

In this example, the `max`

function template can be used to find the maximum of two values of any comparable type, demonstrating its versatility andÂ reusability.

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This Question is from the Lesson:### Function Templates

Understand the fundamentals of C++ function templates and harness generics for more modular, adaptable code.