Vector of Strings help

This is a discussion on Vector of Strings help within the C++ Programming forums, part of the General Programming Boards category; I have a vector of chars and I'm trying to put the chars into a vector of strings: Code: int ...

  1. #1
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    Vector of Strings help

    I have a vector of chars and I'm trying to put the chars into a vector of strings:



    Code:
    int iByteCounter = 0;
    vector<char> vc1TempChar;
    vector<char> vc2TempChar;
    vector<string> vs1String(1000);
    vector<string> vs2String(1000);
    vector<int> viBeginByte;
    vector<stringmatch> vsmStringMatch;
    struct stringmatch
        {
               int b1; // Beginning of string in first file
               int e1; // End of string first file
               int b2; // Beginning of sring 2nd file
               int e2; // end of string 2nd file
               vector<char> vcStringMatch;
        };
    vector<stringmatch> vsmStringMatch;
       .................
                  vs1String.push_back(vc1TempChar[iByteCounter]); // line '1'
                  vs2String.push_back(vc2TempChar[iByteCounter]); // line '2'
                  viBeginByte.push_back(iByteCounter);
                  vsmStringMatch.push_back(smTempStringMatch);
    The problem is that lines '1' and '2' (and other lines like them) produce the following error:

    [error]
    invalid conversion from `char' to `const char*'
    initializing argument 1 of `std::basic_string<_CharT, _Traits, _Alloc>::basic_string(const _CharT*, const _Alloc&) [with _CharT = char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>]'
    [/error]

    What does the error mean and what did I do wrong?

  2. #2
    and the Hat of Guessing tabstop's Avatar
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    vc1TempChar[iByteCounter] is a char. You can't add a char to a vector of strings; you can add a string (or it's C equivalent, which is an (pointer to an) array of chars).

  3. #3
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    invalid conversion from `char' to `const char*'
    Sounds like that could be solved with the '&' operator.

  4. #4
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    So would
    Code:
    char* pcTemp;
    
    pcTemp = vc1TempChar[iByteCounter];
    vs1String.push_back(pcTemp);
    work?

  5. #5
    and the Hat of Guessing tabstop's Avatar
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    No. There are two chances that any particular character is a valid pointer: slim and none, and slim isn't looking very well. Do you want each string to be one character long? If not, maybe you want to push back on the string itself, rather than on the vector of strings.

  6. #6
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    No, but the program adds to the string one character at a time.

    Code:
    string sTempString;
    
    
    vs1String.push_back(sTempString);
    vs1String[thisone].push_back(vc1TempChar[iByteCounter]);
    This seems to work
    Last edited by CowsOFFmylawn; 01-11-2009 at 08:33 PM.

  7. #7
    and the Hat of Guessing tabstop's Avatar
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    So push_back on the string itself, not the vector of strings (you can only add a string to a vector of strings). That is, you need
    Code:
    vs1String[whichever_string_youre_on].push_back(vc1TempChar[iByteCounter]);

  8. #8
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    Thanks for the help!

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