g++ example.cpp -o example.exe
./example.exe

iverilog will conflict with the g++ environment：

C:\iverilog\gtkwave\bin C:\iverilog\bin <--> C:\msys64\ucrt64\bin

To solve this, remove the iverilog environment variables, restart your computer, add them back, and restart again, then everything will be fine.

For small programs, basically we only need to compile all the original files together to generate the required executable file. But what if it’s a large-scale project? Many programs are bound to be designed in the direction of modularization and high reusability. The most critical one is reusability, so for the sake of reusability, we put these pre-declarations into the header file. In this way, whether it is a dynamic library or a static link, we can reuse the library by including this header file.

How to compile multiple files?

• Method1:

g++ main.cpp func.cpp -o main

./main    

• Method2 (prefered):

g++ -c main.cpp // generate main.o
g++ -c func.cpp // generate func.o
g++ main.o func.o -o main

./main

#include <map>

map like the dictionary in python, and it will auto sort itself.

#include <vector>

we can implement list.append with using vector.push_back.