Into the C++

For every C++ program, there exist one or more functions, one of which must be named `main`.

int main() { return 0; } // It won't do anything, but it will give you a 0.

Below is the structure of a function.

return_type function_name(parameter_list - it can be empty) {
    // function body
}

Regarding compilation, take my TDM-GCC compiler as an example.

g++ treeinmyhouse.cpp -o thetree // generate thetree.exe
gcc treeinmyhouse.cpp -o thetree // generate thetree.exe, and libstdc++ won't be automatically linked.

g++ Random/treeinmyhouse.cpp -std=c++20 -Wall -Wextra -g -o Random/thetree 
// -o: output treeinmyhouse as thetree in Random folder
// -g: generate debugging information
// -Wextra: More warnings
// -Wall: Common Warnings
// -std: Specify C++ standard, to C++20(2020) version

- more -
// -O2: optimization

Enter my practice set

Into the - Standard Library -
Input and output are handled in the standard library iostream - Into it -