File content as of revision 1:906bda113ceb:

#include "mbed.h"
#include <string>

Serial pc(SERIAL_TX, SERIAL_RX);

int main()
{
   
    string txt("Hello World My Name is Liews");
    string str;

    //txt.clear(); //Clear String
    //int x = txt.empty(); // return 1 if String is Empty

    //pc.printf("size: %d\n",txt.size()); // return size of string
    //pc.printf("length: %d\n",txt.length());  //return size od string

    //pc.printf("operator[]: %c\n",txt[10]); //access to charecter in string
    //pc.printf("at: %c\n",txt.at(10));  //access to charecter in string

    //txt += " Tong"; // add string to string
    //txt.append("s"); // add string to string
    //txt.push_back('K');// add charecter to string

    //str.assign(txt,15,4); //split string at index first and length
    //str.assign("Chawanluck Martchan",10); // cut string by length
    //str.assign("Hello"); // assign string
    //str.assign(10,'*'); // make string **********
    
    
    
    
    
    pc.printf("string txt: %s\n",txt.c_str());
    pc.printf("string txt: %s\n",txt.c_str());
}