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POGeneric VC++ vs g++ query
 

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  1. POGeneric VC++ vs g++ query
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    <p>I have trouble understanding the compilers. The following code does work in UNIX under g++, but under VC++ it would not even compile. Anyone can provide valid reasons why?</p> <pre><code>#include &lt;stdio.h&gt; #include &lt;iostream&gt; #include &lt;string.h&gt; using namespace std; int main() { string tmp_nw_msg, crc_chksum, buffer; cout &lt;&lt; "Enter the string : "; cin &gt;&gt; buffer; if (strlen(buffer.c_str()) &gt;15 ) { tmp_nw_msg = buffer.substr(1,12); crc_chksum = buffer.substr(13,2); cout &lt;&lt; " N/W msg : "&lt;&lt; tmp_nw_msg &lt;&lt; endl; cout &lt;&lt; " crc chksum : "&lt;&lt; crc_chksum &lt;&lt; endl; } else { cout &lt;&lt; "error" &lt;&lt; endl; } std::cin.get(); return 0; } </code></pre> <p>The following error is thrown by VC++, but in g++ it does work fine.</p> <blockquote> <p>Error 1 error C2679: binary '>>' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion) c:\documents and settings\my documents\visual studio 2005\projects\dummy_substr\dummy_substr\substr.cpp 13<br> Error 2 error C2679: binary '&lt;&lt;' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion) c:\documents and settings\my documents\visual studio 2005\projects\dummy_substr\dummy_substr\substr.cpp 19<br> Error 3 error C2679: binary '&lt;&lt;' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion) c:\documents and settings\my documents\visual studio 2005\projects\dummy_substr\dummy_substr\substr.cpp 20<br> Error 4 fatal error C1075: end of file found before the left brace '{' at 'c:\documents and settings\my documents\visual studio 2005\projects\dummy_substr\dummy_substr\substr.cpp(9)' was matched c:\documents and settings\my documents\visual studio 2005\projects\dummy_substr\dummy_substr\substr.cpp 29</p> </blockquote> <p>Output from g++ : </p> <blockquote> <p>Enter the string : BD2d1100mayor47E N/W msg : D2d1100mayor crc chksum : 47</p> </blockquote>
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    1. PTQuestion
    1. USGregory Pakosz
    1. UShalluc1nati0n
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    1. This table or related slice is empty.
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. COWhich version of vc++ are you using?
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      1. POGeneric VC++ vs g++ query
      1. USPierreBdR
    2. COMS Visual Studio 2005
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      1. POGeneric VC++ vs g++ query
      1. UShalluc1nati0n
    3. COUnrelated to the question per se, why are you using strlen(buffer.c_str()) rather than buffer.length()?
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      1. POGeneric VC++ vs g++ query
      1. USLiz Albin
 

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