Thread: Replication of a DOS window?

  1. #1
    C++ beginner
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    Replication of a DOS window?

    I know this can be done, I've seen the code before... but I wanted to make my own without looking at anyone elses... you know?

    I plan on taking inoput from the user and storing it into a string... then calling the system command with the string that holds the command...

    Following? How is this done?
    Oh my goodness.

  2. #2
    Registered User Codeplug's Avatar
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    Take input from the user and store it in a string. Call the system() function with that string.

    Nice signature.

    Welcome to the boards.

    gg

  3. #3
    C++ beginner
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    Is there any specific type of string to use? Like a .. c string? maybe?
    Oh my goodness.

  4. #4
    Registered User Codeplug's Avatar
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    Obtain a string from the user (C++)

    Other parts of the FAQ may help as well.

    gg

  5. #5
    C++ beginner
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    so it'd be like this:

    Code:
    #include <iostream> 
    #include <string> 
    using namespace std;
    
    int main()
    {
        string line;
        
        getline (cin, line );
        system( << line << );
     
    }
    or am I way off?
    Oh my goodness.

  6. #6
    Registered User jlou's Avatar
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    Close, but not quite (did you compile it and find out?) Normally you would just put line in the function call to pass it the string like this:

    func(line);

    With the system function, you can't pass a string variable, so you must do this:

    system(line.c_str());

    which passes a C-style string to the function. Also, you'll need to include the appropriate header to use the system function. In this case, that's <cstdlib>.

  7. #7
    Registered User major_small's Avatar
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    here's another part of the FAQ that may be useful: Run a program from within a program

    just keep in mind that all somebody has to do is replace a program with their own and they can make your program run malicious code without even knowing it...
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  8. #8
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    Thanks for the help guys
    Oh my goodness.

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