I have c++ coded exe function with multiple input in windods7.

I have c++ coded exe function with multiple input in 64 bit windods7. I want to know how do i call exe file function in matlab 2013a. so that i can compile the programme. plz help.

Answer 1

[Prateekshya]

Hello Mahesh,

To call a C++ executable (`.exe`) from MATLAB, you can use the system or ! command to execute the program directly from the MATLAB environment. Here is a step-by-step guide on how you can achieve this:

Step 1: Prepare Your Executable

Ensure that your C++ executable is compiled and ready to be executed. You should know the exact command-line arguments it requires.

Step 2: Use the system Command in MATLAB

You can call your executable using the system function. This function allows you to execute operating system commands from within MATLAB.

% Define the path to your executable
exePath = 'C:\path\to\your\program.exe';

% Define any arguments your program needs
arguments = 'arg1 arg2 arg3'; % Replace with actual arguments

% Construct the command string
commandStr = sprintf('"%s" %s', exePath, arguments);

% Call the executable
[status, cmdout] = system(commandStr);

% Check the status
if status == 0
    disp('Execution successful:');
    disp(cmdout); % Display the output from the executable
else
    disp('Execution failed:');
    disp(cmdout); % Display the error message
end

Step 3: Handle Input and Output

• Input Arguments: If your executable requires inputs, pass them as part of the arguments string. Ensure that the arguments are formatted correctly for the command line.
• Output Handling: The system function captures the standard output and error streams of the executable. You can use cmdout to process or display this output within MATLAB.

Step 4: Alternative Using ! Operator

Alternatively, you can use the ! operator to execute the command:

!C:\path\to\your\program.exe arg1 arg2 arg3

This method is simpler but does not capture the output or status code in MATLAB variables.

I hope this helps!