Converting an String[] to Char[]

[Sinthed]

http://pastebin.com/WAxU1Sxu

  #include <string>
#include <sstream>
#include <iostream>
using namespace std;

	//global variables
	string stringHolder = "";
	string arr[4];
	double option;

class Ascii { 

public: 
	//outputs the options
	void output() { 
		cout<< "1Encrypt-2Decrypt-3Both" << endl;
		cin >> option;
		cout << endl << "Enter String(Dont make it longer than four words):";
		cin.ignore();
		getline(cin,stringHolder);
	}
	//breaks string into words
	void stringBreaker() {
		int i = 0;
		stringstream ssin(stringHolder);
		while (ssin.good() && i < 4){
        ssin >> arr[i];
        ++i;
	}
		for(i = 0; i < 4; i++) {
			 cout << arr[i] << endl;
		}
	}

	//breaks string into char array
	void charBreaker() {

	}
	//will output both encrypted and decrypted versions
	string all() {
		stringBreaker();
		return (arr[1], " ", arr[2], " ", arr[3], " ", arr[4]);
	}
	//encrypts to ascii
    string encyrpt() { 
		stringBreaker();
		return (arr[1], " ", arr[2], " ", arr[3], " ", arr[4]);
	}
	//decrypts from ascii
    string decrypt() { 
				stringBreaker();
		return (arr[1], " ", arr[2], " ", arr[3], " ", arr[4]);
	}

	private:
	//you dont have privates
	};

int main() {
	//local variables
	string result;
	string output;
	Ascii ascii; 

	//output
	ascii.output();

	if (option == 1) {
			result = ascii.encyrpt();
	} else if(option == 2) {
			result = ascii.decrypt();
	} else {
		result = ascii.all();
	}
	cout << "Result " << result;
	system("Pause");
	return 0; 
}

So, I have an array, arr[4], which can hold four words set into it from stringHolder. I want to break each word inputted into arr[4] into an array of characters. No clue how to do this, thanks to anyone who helps.

[AbstractionAnon]

You can access the elements of a string as a char array by using with the data() or c_str() functions.
http://www.cplusplus.com/reference/string/string/data/
http://www.cplusplus.com/reference/string/string/c_str/

Or you can access individual elements by using the the [] operator
http://www.cplusplus.com/reference/string/string/operator[]/
or the at() function
http://www.cplusplus.com/reference/string/string/at/