https://en.cppreference.com › w › cpp › utility › to_chars

Unlike other formatting functions in C++ and C libraries, std::to_chars is locale-independent, non-allocating, and non-throwing. Only a small subset of formatting policies used by other libraries (such as std::sprintf) is provided.

https://stackoverflow.com › questions › 7352099

You'll have to use the method c_str() to get the C string version. std::string str = "string"; const char *cstr = str.c_str(); .c_str() returns a const char *. If you want a non-const char *, use .data(): std::string str = "string"; char *cstr = str.data(); Some other options: Copying the characters into a vector:

https://www.cppstories.com › 2019 › 11 › tochars

How to Convert Numbers into Text with std::to_chars in C++17. In this post, I’ll show you how to use the newest, low-level, conversion routines form C++17. With the new functionality, you can quickly transform numbers into text and have super performance compared to previous techniques.

https://www.techiedelight.com › fr › convert-std-string-char-cpp

Cet article explique comment convertir un std::string à char* en C++. Le array renvoyé doit contenir la même séquence de caractères que celle présente dans l'objet string, suivi d'un caractère nul de fin ('\0') à la fin.

https://www.geeksforgeeks.org › how-to-convert-std-string-to-char-in-cpp

To convert a std::string to a char*, we can use the std::string:c_str () method that returns a pointer to a null-terminated character array (a C-style string). C++ Program to Convert std::string to char*

https://www.geeksforgeeks.org › convert-string-char-array-cpp

1. Using c_str () with strcpy () A way to do this is to copy the contents of the string to the char array. This can be done with the help of the c_str () and strcpy () functions of library cstring.

https://www.geeksforgeeks.org › why-is-conversion-from-string-constant-to-char-valid-in...

In C, it’s permissible to assign a string constant to a ‘char*’ variable and the reason behind it is historical. When C was developed, the ‘const’ keyword didn’t exist, so string constants were just ‘char []’. Therefore, for backward compatibility, C allows assigning a string constant to a ‘char*’. For example, the following code is valid in C:

https://www.techiedelight.com › convert-st

Convert a std::string to char* in C++. This post will discuss how to convert a std::string to char* in C++. The returned array should contain the same sequence of characters as present in the string object, followed by a terminating null character (‘\0’) at the end. 1. Using const_cast Operator.

https://stackoverflow.com › questions › 63963961

It looks to me like std::to_chars_result to_chars(char* first, char* last, double value); overload is not yet implemented in libc++ or libstdc++. Calling it with an int works.

https://en.cppreference.com › w › cpp › string › basic_string › stol

Discards any whitespace characters (as identified by calling std::isspace) until the first non-whitespace character is found, then takes as many characters as possible to form a valid base-n (where n= base) integer number representation and converts them to an integer value.