#include "scv.h"#include <iomanip.h>// nbcode "def" start//create a constraint classstruct addr_constraint : public scv_constraint_base {  //create the objects that will be constrained  scv_smart_ptr<int> row;  scv_smart_ptr<int> col;  SCV_CONSTRAINT_CTOR(addr_constraint) {    //constraint row to be between 10 and 50 exclusive or 200 and 250    //inclusive    SCV_CONSTRAINT ( (row() > 10 && row() < 50)  ||                     (row() >= 200 && row() <= 250) );    //constraint col to be less than row+20 and greater than row-5    //NOTE: if randomization is disabled on row, then row could be    //any value. If row does not meet constraints an error    //is generated.    SCV_CONSTRAINT ( col() > ( row() - 5) );    SCV_CONSTRAINT ( col() < ( row() + 20) );  }};// nbcode "def" endint sc_main (int argc, char** argv) {  scv_random::set_global_seed(1023);  // nbcode "decl" start  //instantiate a constrained object  addr_constraint addr("addr");  // nbcode "decl" end  //if you disable the constraint on row, col is still constrained  //with respect to row. Uncommenting the following lines will  //produce constraint errors because row does not satisfy the  //constraints.  //addr.row->disable_randomization();  //*(addr.row) = 1000;  // nbcode "print" start  //randomize the object five times and print the values  for(int i=0; i<5; ++i) {    addr.next();    scv_out << "Row: " << setw(3) << *(addr.row)            << "; Col: " << setw(3) << *(addr.col) << endl;  }  scv_out << endl;  // nbcode "print" end  return 0;}