String Copy Example Program

/***********  STRING COPY FUNCTION PROGRAM   Jim Engel    **************/

#include <iostream>
#include <cstring>
using namespace std;

int  StrCopy ( char* target, char * source );

int main( )
{	char abc[64] = "ABCDEFGHIJK";
   char dig[64] = "01234567890123456";
   int rv, offset;
   while ( true ) 
   {
      cout << "\n\nString copy demo program\n\nOffset:  ";
      cin  >> offset;
      cout  << "Start in main:\n   dig: " << dig <<  endl <<  endl;

      rv = StrCopy ( dig + offset, abc );

      cout  << "Back in main:\n   dig: " << dig << "\n   rv =  " << rv<<  endl;
   }

   cout << endl << "\nProgram Complete\n";

   return 0;
}

			
int  StrCopy ( char* target, char * source )
{ int mk = 0;
   while ( true )                    {
      if ( source[mk] == 0 ) {
         target[mk] = 0;
         return mk;
      }
      target[mk] = source[mk];
      ++mk;
   }
}