用C对linux串行设备进行初始化、读写操作

I'm working on a new project where I want to make a connection with an FTDI which is connected to my debian machine. I am intending to write the code with C, not C++. Here lies my problem. All the examples I find are incomplete or are made for a c++ compiler in stead of the GCC compiler. I'm working on a new project where I want to ma