c++ - Executing a command shell from popen and set other command shell -

I am working with Quadroਟਰ and Mavalink in a project. I have successfully installed mavproxy in my Ubuntu PC and have run it without problems from the terminal. When I run mavproxy.py from the terminal and connects to a square robot with support for MVLC (APM autoplot), then detects the Mawproxy Quadrotor and everything is fine.

When you execute mavproxy.py , the program starts sending and receiving many parameters in the terminal. You can write some parameters in the terminal to use for any configuration. For example, in the terminal, help command:

  $ mavlink.py. Data donor Fixed & gt; "When the program terminates configuration, you are allowed to input any parameters, for example," STABILIZE &   
 I have  mavlink.py  Has a code to execute from C ++  
 include  & lt; Iostream & gt; Include & lt; Stdio.h & gt; using namespace std; Int main () {FILE * in; Four buff [512]; If (! (In = popen ("mavlink.py", "r"))) {return1; } While (fgets (in fond, size (fond))! = Null) {cout & lt; & Lt; Fond } Pckloc (In); Return 0; }   
 When I run this C ++ program the terminal shows only one that will appear if I was running  mavproxy.py  from the terminal, but I do not know how I can send commands like  help  in C ++ code  
 If you read the program, the  while the  statement allows me to capture  mavproxy.py  and  cout  The parameter generated, but  mavlink.py  does not end at any time unless you type something in the terminal exits or press  CTRL  +  C  So that  while  the loop does not end.  
 I am reading about the popping function, but I have not got the right form to do this.  
 I know that I can use the  mavlink.h  library in my program and send the parameter to the square controller, but not  mavlink.h  want to do this.   
 
 
 I'm not sure I understand your question, but I think you Read the output along with sending the command to  mavlink.py .  
 If so, you have to change the open mode of  popen ()  to " r " to " w  "So that you can write, then you can send commands like this:  
  FILE * fp; Char * command = "HELP"; If (! (Fp = popen ("mavlink.py", "w"))) {return1; Filitt (command, size (four), strangel (command), fp);