Convert std::string to char* in C++
The std::string is also implemented using char array so it is very easy and straightforward to perform this conversion. 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*
C++
// C++ program to convert string to char* #include <iostream> #include <string> using namespace std; int main() { // declaring string string myString = "Geeks For Geeks" ; cout << "string: " << myString << endl; // Using c_str() to get a pointer to a null-terminated // character array const char * charPointer = myString.c_str(); // Now you can use charPointer as a regular C-style // string cout << "C-style string: " << charPointer << endl; return 0; } |
Output
string: Geeks For Geeks C-style string: Geeks For Geeks
Time Complexity: O(1)
Space Complexity: O(1)
How to Convert a std::string to char* in C++?
In C++, strings are the textual data that is represented in two ways: std::string which is an object, and char* is a pointer to a character. In this article, we will learn how to convert a std::string to char* in C++.
Example
Input:
string myString = "w3wiki";
Output:
char * myString = "w3wiki";