Thread: overwrite words in textpad

  1. #1
    Registered User
    Join Date
    Feb 2005

    overwrite words in textpad

    hi, im having a problem overwriting a word (not appending or any other sort of thing), from a text file. Actually, i have no idea how to do it. Im using c++. The thing is, i make the user input a string, and replace it with a word in the text file.
    I also have another problem, you see, i want to store the result of ' system("ver") ' in a string, is it possible to store system commands or not? if its not, could someone please tell me how to detect an operating system with c++.

  2. #2
    Registered User
    Join Date
    Apr 2003
    The thing is, i make the user input a string, and replace it with a word in the text file.
    Why don't you describe in detail what you want to happen here. Maybe write down 1-5 on a piece of paper and fill in the exact steps.

  3. #3
    Hardware Engineer
    Join Date
    Sep 2001

    If you don't know how to do any of this, take some time to work your way through the tutorials. You'll learn about strings, user input and file I/O.

    Then, here's how I suggest you proceed:

    1- Make a string and replace one character in the string. (No user input yet).
    2- Replace a word in the string.
    3- When that works, add user-input. Get the string from the user.
    4- When your string-replacement works with user input, add the code to read the string from the file.

    system() returns an int, not a string.
    int system(const char *s);
    If s is not a null pointer, the function passes the string s to be executed by a command processor, supplied by the target environment, and returns the status reported by the command processor. If s is a null pointer, the function returns nonzero only if the target environment supplies a command processor. Each implementation defines what strings its command processor accepts.
    If you're running Windows, #include <windows> and use GetVersion().

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