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POmingwCC compile error (Eclipse Juno)
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copied!<p>Okay, so I am trying to compile something right now and I am new to C++ so maybe the code itself is causing the error however no red marks show up in the code itself that Eclipse is showing me.</p> <p>Here is what the error says </p> <blockquote> <p>c:\mingw\bin../lib/gcc/mingw32/4.6.2/include/c++/bits/move.h:128:7: error: assignment of read-only reference '__a'</p> <p>c:\mingw\bin../lib/gcc/mingw32/4.6.2/include/c++/bits/move.h:129:7: error: assignment of read-only reference '__b'</p> </blockquote> <p>Any ideas on what I need to do? on a Win7, using Eclipse Juno for C++ with MingwCC</p> <p>Here is what I am compiling, the only new thing I added was this "swap" thing that someone told me to use for my permutation program.</p> <p>UPDATED Permutation.cc</p> <pre><code> #include <iostream> // for cout #include <cstdio> // for printf() #include <sstream> // for stringstream #include <stdio.h> #include <string.h> #include "Permutation.h" using namespace std; Permutation::Permutation() { /* nothing needed in the constructor */ } void Permutation::permute(string str) { int low = 0; int high = str.length(); int j; if (low == high) { cout << str << endl; } else { for (j = low; j <= high; j++) { std::swap(str[low], str[j]); permute(str, low + 1, high); std::swap(str[low], str[j]); } } } void Permutation::permute(string str, int low, int high) { // int j; // if (low == high) { // cout << str << endl; // } else { // for (j = low; j <= high; j++) { // std::swap(str[j + low], str[j + j]); // permute(str, low + 1, high); // std::swap(str[j + low], str[j + j]); // } // } } </code></pre> <p>Permutation.h</p> <pre><code>#pragma once #include <string> using namespace std; class Permutation { public: Permutation(); void permute (string); void permute (string, int, int); private: /* attemp to solve this problem without adding * any instance variables/data members, but * you may add private helper function members * as many as you need */ }; </code></pre> <p>main.cc</p> <pre><code>#include "Permutation.h" int main() { Permutation p; p.permute ("Permute"); p.permute ("--*--", 2, 3); } </code></pre>

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