#include <vcl.h>
#pragma hdrstop
#include <iostream.h>
#include <conio.h>
#include <cstring.h>
#include <fstream.h>
class stroka{
public:
       int q=0;
    const int size n=4;
    const int size m=5;
        char str[size];
        void sone ( );
        cin.getline(str,size);
          ofstream ptk1("test18.txt");
        cout<<"length of string is:"<<strlen(str)<<endl;
         ptk1<<"length of string is:"<<strlen(str)<<endl; }
  }
  void stroka::sone ( ) {
        if (strstr(str,"a"))
        {
                cout<<"a in the string"<<endl;
                ptk1<<"a in the string"<<endl;
        }
         getch ();
        }