How to use C Libraries for Arduino code

Question

I have a code in Visual studio that I want to implement in Arduino. But there is a problem. Many libraries usable in Visual Studio aren't usable in the Arduino IDE. How can I use them in my Arduino code? To be precise, the libraries I want to use are

#include <iostream>
#include <iomanip>
#include <queue>
#include <string>
#include <math.h>
#include <ctime>

I know I have <iostream> available in Arduino. <math.h> is also available I think along with the <string> library. The main problem is to how to use #include<queue> and its functions such as priority_queue() and other functions of iosteam like .pop()? Any help would be highly appreciated.

• aaa: Weird, I can remember using the same ATMega328P with another compiler, where it did work. Though you can check if an external library fits your needs: playground.arduino.cc/Code/QueueList But I would understand if you prefer a solution rather than a work-around?
• Piper McCorkle: The Arduino doesn't have an operating system, so therefore doesn't have a C standard library.
• Edgar Bonet: @mypal125: The Arduino does have a standard C library (avr-libc for the AVR based boards). What it lacks is the C++ STL, but see Nick Gammon's answer on how to add it.
• Piper McCorkle: @EdgarBonet: TIL!

Answer 1

Some of the libraries you mention (iomanip, iostream, queue, string) are part of the STL - Standard Template Library. Whilst it does not ship with the IDE download, you can install it yourself. See The Standard Template Library (STL) for AVR with C++ streams - a port to the Arduino by Andy Brown.

I have some implementation notes here.

Be aware that a lot of Arduinos don't have much RAM, so you need to use libraries like this with caution.

Library download: AVR standard template library, version 1.1.1 - 197.29 kB