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 = "GeeksforGeeks";

Output:
char * myString = "GeeksforGeeks";

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)