{"id":2738,"date":"2022-08-30T15:27:22","date_gmt":"2022-08-30T15:27:22","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2014\/02\/08\/problem-about-stringstream-collection-of-common-programming-errors\/"},"modified":"2022-08-30T15:27:22","modified_gmt":"2022-08-30T15:27:22","slug":"problem-about-stringstream-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2022\/08\/30\/problem-about-stringstream-collection-of-common-programming-errors\/","title":{"rendered":"problem about stringstream-Collection of common programming errors"},"content":{"rendered":"<ul>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/abbacab483d566dbeb19ea039751c239?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nAudioDroid<br \/>\nc++ string boost stringstream csv<br \/>\nPossible Duplicates:Dont print space after last numberPrinting lists with commas C++ #include &lt;vector&gt; #include &lt;iostream&gt; #include &lt;sstream&gt; #include &lt;boost\/foreach.hpp&gt; using namespace std;int main() {vector&lt;int&gt; VecInts;VecInts.push_back(1);VecInts.push_back(2);VecInts.push_back(3);VecInts.push_back(4);VecInts.push_back(5);stringstream ss;BOOST_FOREACH(int i, VecInts){ss &lt;&lt; i &lt;&lt; &#8220;,&#8221;;}cout &lt;&lt; ss.str();return 0; }This prints out: 1,2,3,4,5, Howev<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/db916a1e4c13a45a22d50a2f9e4a86f8?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nJohn Dibling<br \/>\nc++ stl vector stringstream<br \/>\nI have a vector&lt;char&gt; of data which I want to write into std::stringstream. I tried:my_ss.write(vector.data(), vector.size());&#8230;but it seems to put nothing into my_ss which I declared as follows:std::stringstream my_ss( std::stringstream::binary); Why write is not working (app does not crash and compiles with 0 errors, 0 warnings)?<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/c496185d1a8086c03308279c6039df61?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nDmitryR<br \/>\nc++ json stringstream bada<br \/>\nbada crashed on stringstream read.json::Object objDocument = d(); std::stringstream stream; json::Writer::Write(objDocument, stream); json::Object objDocument2; json::Reader::Read(objDocument2, stream); \/\/ &lt;=== crashor like this:std::string *requestString = new std::string(data); AppLog(requestString-&gt;c_str()); \/\/ &lt;=== contains correct data std::stringstream stream; stream &lt;&lt; *requestString; const char *ddd = stream.str().c_str(); AppLog(ddd); \/\/ &lt;==== contains random dataHow c<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/0db44da725986180b86b5ac032499f1d?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nFerrard<br \/>\nc++ recursion segmentation-fault stringstream<br \/>\n#include &lt;sstream&gt; #include &lt;string&gt;using namespace std;void fRec(int i) {if (i == 0) {return;}fRec(i &#8211; 1);ostringstream s; }int main(int argc, char *argv[]) {fRec(50000);return 0; }When run, this produces:Segmentation fault (core dumped)Backtrace from gdb:#0 0x000000000040064f in fRec (i=&lt;error reading variable: Cannot access memory at address 0x7fffc75a6f5c&gt;) at strstr.cpp:6 #1 0x000000000040066e in fRec (i=28182) at strstr.cpp:11 #2 0x000000000040066e in fRec (i=28183) at<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/86a21aa52d8617a34bc5139c086c1869?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nJBL<br \/>\nc++ stringstream<br \/>\nSo, I&#8217;m trying to use a stringstream in my program, in order to get some formatted string (esp. because I need to convert numbers to string).The thing is, my program crashes, and when I debug it with Visual Studio, in my Spy window, I see that my stringstream&#8217;s string buffer yields (when trying to add &#8220;Framerate&#8221; to it): &#8220;Framerate\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00cd\u00fd\u00fd\u00fd\u00fd\u00ab\u00ab\u00ab\u00ab\u00ab\u00ab\u00ab\u00ab\u00ee\u00fe\u00ee\u00fe&#8221;Code :std::stringstream s; s &lt;&lt; &#8220;Framerate&#8221;;My code then will crash the moment I try to get the associated string&#8230; I ca<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/d0b9e52290b9c5ee9f54bf015b9e25fe?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\njohnkavanagh<br \/>\ncrash stringstream codegear rtl<br \/>\nI&#8217;m using Borland Codegear 2007 C++ compiler.I have a crash of my program when I use std::stringstream in my functions.It&#8217;s enough to declare a local variable in a function std::stringstream sLoc; that program crashesI verify that the problem can be solved by checking &#8220;Linker\/Dynamic RTL&#8221; optionIs this the only way?I&#8217;d like compile the application without Dynamic RTL option. Is it possible compile RTL? Is this a solution? Is there a compiler-patch?<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/MiKZG.jpg?s=32&amp;g=1\" \/><br \/>\nCaesar<br \/>\nc++ stringstream<br \/>\nGiven data format as &#8220;int,int,&#8230;,int,string,int&#8221;, is it possible to use stringstream (only) to properly decode the fields?[Code]int main(int c, char** v) {std::string line = &#8220;0,1,2,3,4,5,CT_O,6&#8221;;char delimiter[7];int id, ag, lid, cid, fid, did, j = -12345;char dcontact[4]; \/\/ &lt;- The size of &lt;string-field&gt; is known and fixedstd::stringstream ssline(line);ssline &gt;&gt; id &gt;&gt; delimiter[0]&gt;&gt; ag &gt;&gt; delimiter[1]&gt;&gt; lid &gt;&gt; delimiter[2]&gt;&gt; cid &gt;&gt; delim<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/4b63fcd2a58a98f3991827b7b644aa97?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nMarian<br \/>\nc++ string stdvector stringstream<br \/>\nI have a class with parse(int argc, char* argv[]) function which I have to use to set a desired state of an object. I&#8217;m taking the parameters from the gui using stringstream and then I&#8217;m trying to convert them to char** to pass them to the function. Here&#8217;s what I&#8217;ve got:std::stringstream sstream;sstream &lt;&lt; &#8220;-clip&#8221; &lt;&lt; &#8221; &#8221; &lt;&lt; min_x_entry.get_text()&lt;&lt; &#8221; &#8221; &lt;&lt; max_x_entry.get_text(); \/\/ etc.std::cout &lt;&lt; sstream.str(); \/\/ All looks good herestd::vector&lt;std::st<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/MiKZG.jpg?s=32&amp;g=1\" \/><br \/>\nCaesar<br \/>\nc++ string stringstream<br \/>\nI am having some trouble with a simple function that tries to convert integers to a string. Here is the code:string Problem::indexB(int i, int j, int k){ stringstream ss;if(i &lt; 10)ss &lt;&lt; &#8220;00&#8221;;else if(i&lt;100)ss &lt;&lt; &#8220;0&#8221;;ss &lt;&lt; i;if(j &lt; 10)ss &lt;&lt; &#8220;00&#8221;;else if(j&lt;100)ss &lt;&lt; &#8220;0&#8221;;ss &lt;&lt; j;if(k &lt; 10)ss &lt;&lt; &#8220;00&#8221;;else if(k&lt;100)ss &lt;&lt; &#8220;0&#8221;;ss &lt;&lt; k;return ss.str(); }The function works fine, but when a make multiple calls it gives me a segmenta<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/f1faf7580424c3ffd5b5f2924ffce0b2?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nSteve Folly<br \/>\nc++ iostream stringstream<br \/>\nConsider this program:#include &lt;iostream&gt; #include &lt;string&gt; #include &lt;sstream&gt; #include &lt;cassert&gt;int main() {std::istringstream stream( &#8220;-1&#8221; );unsigned short n = 0;stream &gt;&gt; n;assert( stream.fail() &amp;&amp; n == 0 );std::cout &lt;&lt; &#8220;can&#8217;t convert -1 to unsigned short&#8221; &lt;&lt; std::endl;return 0; }I tried this on gcc (version 4.0.1 Apple Inc. build 5490) on OS X 10.5.6 and the assertion is true; it fails to convert -1 to an unsigned short.In Visual Studio 2005<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/MNGSo.jpg?s=32&amp;g=1\" \/><br \/>\n0x499602D2<br \/>\nc++ arrays memory-management stringstream istringstream<br \/>\nCan anyone explain how the following code is working and does not crash the application?int main() {char *tempStr = new char[5];tempStr[0] = &#8216;\\0&#8217;;string stemp = &#8220;helloworld&#8221;;stringstream sstream;sstream.str(stemp);cout &lt;&lt; &#8220;len before = &#8221; &lt;&lt; strlen(tempStr);sstream &gt;&gt; tempStr;cout &lt;&lt; &#8220;len after = &#8221; &lt;&lt; strlen(tempStr) &lt;&lt; endl;cout &lt;&lt; tempStr &lt;&lt; endl;delete[] tempStr;return 1; }I am getting the output as len before = 0 len after = 10 helloworldDid str<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/5d918a9f6123314e49bbe9b104f8198e?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nadriano abrantes<br \/>\nc++ type-conversion stringstream<br \/>\nI have tried to solve this with previously answered questions like Conversion from string to float changes the number but I have not been successful. In my code I take a string full of &#8216; &#8216; characters and convert it to float using stringstream. It worked fine (returned me a zero valued float) until I performed another conversion right after that. When a conversion is executed afterwards, the value stored in the float previously converted is not zero, but 4.57048e-41. I hope the following code ex<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/b0e51ea6ddf77b561e5fa51baed4f68a?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nEdgeLuxe<br \/>\nc++ string insert stringstream<br \/>\nso I am trying to insert the character, which i got from a string, to another string. Here I my actions:1. I want to use simple:someString.insert(somePosition, myChar);2. I got an error, because insert requires(in my case) char* or string 3. I am converting char to char* via stringstream:stringstream conversion; char* myCharInsert; conversion &lt;&lt; myChar \/\/That is actually someAnotherString.at(someOtherPosition) if that matters; conversion &gt;&gt; myCharInsert; someString.insert(somePositio<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/1fbbb05185d37fab82344949df931dac?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nuser1972060<br \/>\nc++ string stl stringstream<br \/>\nI have a vector:vector&lt;stringstream*&gt; ssv; for (int i = 0; i &lt; cIter; i++) {ssv.push_back(new std::stringstream); }How can I put in elements of vector ssv strings?I try:string s1 = &#8220;easfef&#8221; + &#8216;\\n&#8217;; int i = 0; *ssv[i] &lt;&lt; s1 &lt;&lt; &#8216;\\n&#8217;;But it give me an empty string: string sdf = ssv[i]-&gt;str();How can I do it?Thanks for helping with &#8216;\\n&#8217;, but it is stil a problem with vector: if i write:std::string s1 = &#8220;qwerqwr\\n&#8221;; \/\/ for example int i = 0; *ssv[i] &lt;&lt; s1;But give<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/d5f91983a9d9cfb69981b6108a63b412?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nskaffman<br \/>\nc++ char argument-passing stringstream const-char<br \/>\nI have a function for writing ppm files (a picture format) to disk. It takes the filename as a char* array. In my main function, I put together a filename using a stringstream and the &lt;&lt; operator. Then, I want to pass the results of this to my ppm function. I&#8217;ve seen this discussed elsewhere, often with very convoluted looking methods (many in-between conversion steps). What I&#8217;ve done is shown in the code below, and the tricky part that others usually do in many steps with temp variables i<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/f0a9ca1a078d88eaf2bc17ef98a205ef?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nhighBandWidth<br \/>\nc++ r osx-snow-leopard stringstream rcpp<br \/>\nIt seems std::stringstream doesn&#8217;t work with Rcpp. To isolate the problem, I wrote a minimal program:#include &lt;string&gt; #include &lt;sstream&gt; #include &lt;Rcpp.h&gt;float atof(std::string a) {std::stringstream ss(a);Rf_PrintValue(Rcpp::wrap(a));float f;Rf_PrintValue(Rcpp::wrap(f));ss &gt;&gt; f;Rf_PrintValue(Rcpp::wrap(f));return (f); }RcppExport SEXP tsmall(SEXP sR) {std::string sC = Rcpp::as&lt;std::string&gt;(sR);return Rcpp::wrap(atof(sC)); }tsmall should just convert a string to flo<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/cd93342de8667b11799c7897d4d46001?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nPedro d&#8217;Aquino<br \/>\nc++ unicode stl stringstream<br \/>\nGiven that the following snippet doesn&#8217;t compile:std::stringstream ss; ss &lt;&lt; std::wstring(L&#8221;abc&#8221;);I didn&#8217;t think this one would, either:std::stringstream ss; ss &lt;&lt; L&#8221;abc&#8221;;But it does (on VC++ at least). I&#8217;m guessing this is due to the following ostream::operator&lt;&lt; overload:ostream&amp; operator&lt;&lt; (const void* val );Does this have the potential to silently break my code, if I inadvertently mix character types?<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/graph.facebook.com\/759163170\/picture?type=large\" \/><br \/>\nJace<br \/>\nc++ stringstream uint64 char-pointer<br \/>\nI&#8217;m working on a game and I ran into a strange little issue&#8230; I was wondering if anyone here would be able to figure this out and explain it to me (it&#8217;s eating me up!)Firstly, here&#8217;s the relevant code.\/\/ even if this data is not set, it returns &#8220;&#8221; \/\/ so it&#8217;s pretty much never null \/\/ but if the function returns something, \/\/ it will be the string representation of a 64bit unsigned int const char* c_KickID = GetGameData(&#8220;kick_member_id&#8221;);\/\/gets my ID, works fine. unsigned long long myID = GetM<\/li>\n<\/ul>\n<p id=\"rop\"><small>Originally posted 2014-02-08 15:45:18. <\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>AudioDroid c++ string boost stringstream csv Possible Duplicates:Dont print space after last numberPrinting lists with commas C++ #include &lt;vector&gt; #include &lt;iostream&gt; #include &lt;sstream&gt; #include &lt;boost\/foreach.hpp&gt; using namespace std;int main() {vector&lt;int&gt; VecInts;VecInts.push_back(1);VecInts.push_back(2);VecInts.push_back(3);VecInts.push_back(4);VecInts.push_back(5);stringstream ss;BOOST_FOREACH(int i, VecInts){ss &lt;&lt; i &lt;&lt; &#8220;,&#8221;;}cout &lt;&lt; ss.str();return 0; }This prints out: 1,2,3,4,5, Howev John Dibling c++ stl vector stringstream I have a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2738","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/2738","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=2738"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/2738\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=2738"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=2738"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=2738"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}