C++ Program to find the Number of Bytes in a Text file

      #include<fstream.h<
   #include<process.h<
   #include<stdio.h<
   #include<iostream.h<
   #include<process.h<
   #include<conio.h<
   main()
   {
     clrscr();
     int c=0;
     char ch,file[30];
     cout<<"Enter the name of the file:";
     gets(file);
     fstream f1;
     f1.open(file,ios::in);
     if(f1.bad())
     {
       cout<<"File can not be opened.";
       exit(0);
     }
     if(f1.good())
     {
       cout<<"The current contents of the file are:";
       while(f1)
       {
         f1.get(ch);
         c++;
         cout<<ch;
       }
     }
     cout<<"Total no. of Bytes are "<<c;
     f1.close();
     cout<<"Press Enter key to continue...";
     getch();
     return(0);
   }