CODEWITHSUNDEEP
c++shellterminalcommand
Kinnard Hockenhull
Kinnard Hockenhull

Reputation: 3020

How do I create terminal commands in a c++ program?

I'm writing a c++ program and I want people to be able to operate it from the terminal. The only thing I know how to do is cin which, though upon receiving the program could act, I wouldn't call a command. Thanks!!

Upvotes: 2

Views: 3028

Answers (2)

Masked Man
Masked Man

Reputation: 11075

In your program, use the alternate int main signature, which accepts command line arguments.

int main(int argc, char* argv[]);
// argc = number of command line arguments passed in
// argv = array of strings containing the command line arguments
// Note: the executable name is argv[0], and is also "counted" towards the argc count

I also suggest put the location of your executable in the operating system's search path, so that you can call it from anywhere without having to type in the full path. For example, if your executable name is foo, and located at /home/me (on Linux), then use the following command (ksh/bash shell):

export PATH=$PATH:/home/me`

On Windows, you need to append your path to the environment variable %PATH%.

Then call the foo program from anywhere, with the usual:

foo bar qux
(`bar` and `qux` are the command line arguments for foo)

Upvotes: 0

Loki Astari
Loki Astari

Reputation: 264649

Try

#include <iostream>
int main(int argc, char* argv[])
{
    std::cout << "Command: " << argv[0] << "\n";
    for(int loop = 1;loop < argc; ++loop)
    {
        std::cout << "Arg: " << loop << ": " << argv[loop] << "\n";
    }
}

Upvotes: 3

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