What are some examples of using const references in C++?

Can you explain what a const reference is in C++?

A const reference in C++ is a reference that cannot be used to modify the object it refers to. It ensures that the data remains unchanged.

Can you give me an example of how to use a const reference?

Sure! Here's an example:

void printValue(const int &value) {
    std::cout << value << std::endl;
}

int main() {
    int x = 10;
    printValue(x); // x is passed as a const reference
}

What are the benefits of using const references?

Using const references can improve performance by avoiding unnecessary copies of large objects and also helps in maintaining const-correctness.

Are there any limitations to using const references?

Yes, you cannot modify the object through a const reference, and it cannot bind to temporary objects unless they are also const.