You can convert the System::String to a std::string via: // Requires: #include <msclr/marshal_cppstd.h> auto str = msclr::interop::marshal_as<std::string>(txtBoxPath->Text); Once you have a std::string, then c_str() will provide you the const char*: const char* cPath = s...
#include <string> intmain() { std::stringstr="std::string to const char*"; constchar*c=str.c_str(); std::cout<<c; return0; } DownloadRun Code Output: std::string to const char* 2. Usingstring::datafunction We can also call thestring::datafunction on astd::stringobject to get...
If you just want to pass a std::string to a function that needs const char *, you can use .c_str(): std::string str; const char * c = str.c_str(); And if you need a non-const char *, call .data(): std::string str; char * c = str.data(); .data() was added ...
Hello. for my program I need to change a string into a const char ( for opendir ) 1234567 ... string uhome=getenv("HOME"); string dir1="/Desktop"; const char *findir=uhome+dir1; const char *curdir=findir; dir=opendir(curdir); ... thanks in advance and yes i have searched th...
I want to convert std::string into a const char in a simple and understandable way. Mar 30, 2016 at 1:32am JLBorges (13770) 1234 const std::string str = "hello world!" ; // http://en.cppreference.com/w/cpp/string/basic_string/c_str const char* cstr = str.c_str() ; //...
If you want a copy of the string for later destruction, then I would probably do something more like:prettyprint Copier const char* CSVMTrainDlg::convtCStrToChar(CString const & strParam) { CStringA cstraParam(strParam); size_t len = cstraParam.GetLength()+1; char *ncharStr = new...
If you just want to pass a std::string to a function that needsconstchar* you canusestd::stringstr;constchar* c =str.c_str(); If you want to get a writable copy, likechar*, you candothat with this: std::stringstr;char* writable = newchar[str.size() +1]; std::copy(str.be...
路径改成 char*后,将string类型转化为char*. 提示string类型直接赋值给char* 错误: error C2440: '=' : cannot convert from 'const char *' to 'char *' 更正方法: 将char* 定义为 const char* 即可. 代码: string imbagFilePath="G:\\WorkSpace\\FileOperation\\fluor1_AjaxOrange_078.imbag"; ...
Hi, I need to implement that feature to interact System.string with C++ string, any idea of that? Found no api to do that, don't wanna implement in C# side, but I reckon conversion in C++ side should be more efficient. desc: //a System.String obj char *str = obj.c_str(); jack...
There is the String.c_str() function to get the pointer. So, you strcpy() should be written like that : Code:Select allstrcpy (WiFSSID, WiFi.SSID(i).c_str()); Re: Compile error - cannot convert 'String' to 'const char*'#40424 ...