Main(1).cpp -

The #include lines at the top bring in libraries (like iostream for input and output).

Knowing exactly what a file does (e.g., user_auth.cpp vs main(1).cpp ). main(1).cpp

#include int main() { std::cout << "Hello, World!" << std::endl; return 0; } Use code with caution. Copied to clipboard The #include lines at the top bring in

Avoiding confusion when multiple developers are working on the same codebase. main(1).cpp

While main(1).cpp will compile and run, it is considered poor practice to keep such names in a professional project. Meaningful file naming helps with: