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Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up I'm getting error C2664 on some I/O code up vote 2 down vote favorite void BinaryTree::InitializeFromFile(string Filename){ ifstream inFile; inFile.open(Filename, fstream::binary); if(inFile.fail()){ cout<<"Error in opening file ifstream "<:: open(const wchar_t *,std::ios_base::openmode,int)' : cannot convert parameter 1 from 'std::string' to 'const wchar_t *' 1> with 1> [ 1> _Elem=char, 1> _Traits=std::char_traits 1> ] 1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called Line 293 is inFile.open(Filename, fstream::binary); c++ visual-c++ huffman-coding share|improve this question edited Mar 4 '10 at 18:21 BIBD 9,0482059102 asked Feb 26 '10 at 18:39 Azreal 1122416 add a comment| 4 Answers 4 active oldest votes up vote 4 down vote accepted Use Filename.c_str() instead - open() doesn't take a std::string as a parameter for the filename. share|improve this answer answered Feb 26 '10 at 18:42 Timo Geusch 19.3k33354 add a comment| up vote 3 down vote use Filename.c_str() instead of Filename in the call of ifstream::open share|improve this an

the beginning there are problems compiling it. 1
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#include #include #include using namespace std; int main () { string filename; char inputfilename, outputfilename; ifstream inputfile; while(!inputfile.is_open()) { cout << "Input filename: "; getline (cin, inputfilename); inputfile.open(inputfilename,ios::in http://stackoverflow.com/questions/2343979/im-getting-error-c2664-on-some-i-o-code | ios::binary); } ofstream outputfile; while(!inputfile.is_open()) { cout << "Output filename: "; getline (cin, outputfilename); outputfile.open(outputfilename,ios::out | ios::binary); } system("pause"); return 0; } But it can't be compiled. Full error code: 1
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1 1>Compiling... 1>livc++.cpp 1>.\livc++.cpp(13) : error C2664: 'void std::basic_ifstream<_Elem,_Traits>::open(const http://www.cplusplus.com/forum/beginner/6590/ wchar_t *,std::ios_base::openmode,int)' : cannot convert parameter 1 from 'std::string' to 'const wchar_t *' 1> with 1> [ 1> _Elem=char, 1> _Traits=std::char_traits 1> ] 1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called 1>.\livc++.cpp(20) : error C2664: 'void std::basic_ofstream<_Elem,_Traits>::open(const wchar_t *,std::ios_base::openmode,int)' : cannot convert parameter 1 from 'std::string' to 'const wchar_t *' 1> with 1> [ 1> _Elem=char, 1> _Traits=std::char_traits 1> ] 1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called 1>Build log was saved at "file://c:\Users\Toby Hinloopen\Documents\Visual Studio 2005\Projects\livc++\livc++\Release\BuildLog.htm" 1>livc++ - 2 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== Based on the error, i think i need to co

first time posting here so I'm sorry if I post something wrong. I have an assignment for my class and I think I have done everything right, well except for this one error that's been killing me. I get this error for https://www.daniweb.com/programming/software-development/threads/330279/error-c2664-cannot-convert-parameter-1 each function call when I try to compile (so basically two errors) (109): error C2664: https://www.gidforums.com/t-10586.html 'sortArray' : cannot convert parameter 1 from 'std::string *' to 'char *[]' Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast (113): error C2664: 'binarySearch' : cannot convert parameter 1 from 'std::string *' to 'char *[]' Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast I had this error before with doubles and the open file way I fixed it was to remove the pointers in the array, now whenever I do that it gives me about 10 more errors, basically about std:operators or something, and I need the stuff to be in a string for my homework assignment. Use C-Strings to do Part 1 of the assignment and the string class to do Part 2 of the assignment. Part 2 of this Assignment requires your program to read in a list of error c2664 fstream strings from a file called strings3.dat, then display, sort, display, and search the strings (just like Assignment #1 but with strings, not integers). Use the string class to do Part 2 of the assignment (do not use C-Strings to store the strings read from strings3.dat). Here's my code so far #include #include #include #include using namespace std; //function prototypes bool verifyPass(char *); int verifyUpper(char *); int verifyLower(char *); int verifyNum(char *); int binarySearch(char *[], int, string); void sortArray(char *[], int); int menu(); int main() { cout << "Welcome to this program!" << endl; menu(); return 0; } //function definitions int menu() { int num=0; int ans=1; cout << "Here is the menu." << endl; cout << "Choose one of the following, or choose to quit this program." << endl << endl; cout << "1. Enter a strong password" << endl; cout << "2. Search for a string in the list of strings read from a data file" << endl; cout << "3. Quit" << endl << endl; cout << "Enter your choice:"; cin >> num; if (num <1 || num > 3) cout << "Enter a number between 1 and 3!" << endl; else { switch (num) { case 1: { char password[100]; while (ans==1) { cout << "Enter a password with the following criteria:\n"; cout << "8 to 10 characters\n"; cout << "1 uppercase\n

Thread #1 08-Jul-2006, 10:03 jdbrine Junior Member Join Date: May 2006 Posts: 56 ofstream Problem I am getting a compile error when trying to use the ofstream object. I've used it before and don't understand why I'm receiving the error. At this point in my program, I'm just trying to set up my FileWriter class and test it. Code and error is below: //FileWriter.h CPP / C++ / C Code: 

 #ifndef _FILEWRITER_H #define _FILEWRITER_H #include  #include  using namespace std; class FileWriter { private: ofstream fileout; bool ready; public: FileWriter(); //FileWriter(fileout);  void Write(string s); void WriteLn (string s); void Write(int n); void WriteLn (int n); void NewLine(); bool isReady(); void OpenFile(); void setPrecision(int n); void OpenFile(string f); //~FileWriter();  }; #endif
//FileWriter.cpp CPP / C++ / C Code: 
 #include  #include  #include "FileWriter.h" using namespace std; FileWriter::FileWriter() { ready=false; std::string strFile; strFile="Test.txt"; fileout.open(strFile.c_str, ios_base::out ); /*error C2664: 'void __thiscall std::basic_ofstream >::open(const char *,int)' : cannot convert parameter 1 from 'const char *(void) const' to 'const char *' There is no context in which this conversion is possible*/ } /*FileWriter::FileWriter(fileout) { }*/ void FileWriter::Write(string s) { } void FileWriter::Write(int n) { } void FileWriter::WriteLn(string s) { } voi
 

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