#includeThis code attempts to open a file, and if it fails, an error message is printed to the standard error stream. After this, the `clear()` function is called to clear any error flags that may have been set. **Package/Library:** Error Clear is part of the C++ standard library, which is included in all C++ compilers.#include int main() { std::ifstream file("example.txt"); if (!file.is_open()) { std::cerr << "Error opening file.\n"; file.clear(); // clear error flag } // rest of code }