Quick question about characters

This is a discussion on Quick question about characters within the C++ Programming forums, part of the General Programming Boards category; I'm trying to replace a string containing the characters ''. It's easy to std::cout them directly to the screen, replacing ...

  1. #1
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    Quick question about characters

    I'm trying to replace a string containing the characters ''. It's easy to std::cout them directly to the screen, replacing them was a bit trickier though. This is my solution:

    If you can't see which characters I mean, it's character (134,132,148)
    http://www.asciitable.com/

    Code:
    #include <iostream>
    #include <string>
    
    using namespace std;
    
    int main(void) {
    	string str = "0123456789 abcdefghijklmnopqrstuvxyz ";
    
        str.replace(str.find(""), str.find("")+1, "\x86");
    	str.replace(str.find(""), str.find("")+1, "\x84");
    	str.replace(str.find(""), str.find("")+1, "\x94");
        str.replace(str.find(""), str.find("")+1, "\x8F");
    	str.replace(str.find(""), str.find("")+1, "\x8E");
    	str.replace(str.find(""), str.find("")+1, "\x99");
    	
    	for (int i=0;i<str.size();i++) {
    		cout << str[i];
    	}
    
        cin.ignore(cin.rdbuf()->in_avail()+1);
        cin.get();
        return 0;
    }
    How would you do, if you wanted to replace the string like I want to. It works sometimes which is quite weird. Right now I only get run-time errors though.

  2. #2
    Cat without Hat CornedBee's Avatar
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    8,892
    I'd use wide strings. C++ is unfortunately very unprepared for dealing with international data. Wide characters and strings work somewhat, but they're not ideal. Still, they're the best solution you'll get without involving 3rd party libraries or lots of specialized code.

    Make sure that you know the encoding of your file, and that your compiler knows it, too.
    Code:
    #include <iostream>
    #include <string>
    
    using namespace std;
    
    int main(void) {
    	wstring str = L"0123456789 abcdefghijklmnopqrstuvxyz &#229;&#228;&#246;";
    
        // You might want to call find() only once and cache the result. You also absolutely HAVE TO
        // verify that you actually found something. That's most likely the source of your errors.
        // Oh, and you ought to use proper values for the replacement.
        str.replace(str.find(L"&#229;"), str.find(L"&#229;")+1, L"\x86");
    	str.replace(str.find(L"&#228;"), str.find(L"&#228;")+1, L"\x84");
    	str.replace(str.find(L"&#246;"), str.find(L"&#246;")+1, L"\x94");
        str.replace(str.find(L"&#197;"), str.find(L"&#197;")+1, L"\x8F");
    	str.replace(str.find(L"&#196;"), str.find(L"&#196;")+1, L"\x8E");
    	str.replace(str.find(L"&#214;"), str.find(L"&#214;")+1, L"\x99");
    	
    	for (int i=0;i<str.size();i++) {
    		wcout << str[i];
    	}
    
        wcin.ignore(wcin.rdbuf()->in_avail()+1);
        wcin.get();
        return 0;
    }
    All the buzzt!
    CornedBee

    "There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
    - Flon's Law

  3. #3
    Captain Crash brewbuck's Avatar
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    Quote Originally Posted by password View Post
    If you can't see which characters I mean, it's character (134,132,148)
    http://www.asciitable.com/
    What an awful web page. The character set shown is PC-8, not "Extended ASCII." There is no such thing as Extended ASCII.

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