i have this expression and i want to model it with cplex and c++ , i don't know if the code is correct or not , can someone help me,  with x[w][w][i][j] is a decision variable 




this is my code : 

		compteur = 0;
		IloFloatVarArray2 CW(env, W);
		for (w = 0; w < W; w++)
		{
			CW[w] = IloFloatVarArray(env, W, 0.0, INFINITY);
			model.add(CW[w]);
#ifdef DEBUG
			for (w = 0; w < W; w++)
			{
				sprintf(varname, "CW_%d_%d", w, w);
				CW[w][w].setName(varname);
				compteur++;
			}
		}
#endif
#ifdef DEBUG
		printf("compteur cw =%d\n", compteur);
#endif

		IloExpr CW[w][w](env);

		for (i = 0; i < A; i++)
			for (j = 0; j < A; j++)
				CW[w][w] += d[i][j] * xW[w][i][j][w];
		for (i = 0; i < A; i++)
			for (j = 0; j < A; j++)
				CW[w][w] += Parc[i][j] * xW[w][i][j][w];
		for (i = 0; i < A; i++)
			for (j = 0; j < A; j++)
				CW[w][w] += 1 * xW[w][i][j][w];
		model.add(env, CW[w][w]);
                CW[w][w].end();
​

------------------------------
siwar mni
------------------------------

#DecisionOptimization

Hello,
you have to create a 2-D array of expressions, fill it, and then constrain the expressions by some constraints. for example:

#include <ilcp/cp.h>

int main() {   
  typedef IloArray<IloNumExprArray> IloNumExprArray2;
  IloEnv env;
  IloInt n = 4;
  IloNumExprArray2 c(env, n);
  IloIntVarArray var(env, n, 0, n-1); 
  for (IloInt x = 0; x < n; x++) {
    c[x] = IloNumExprArray(env, n); 
    for (IloInt y = 0; y < n; y++) {
      c[x][y] = IloNumExpr(env, 0); 
      c[x][y] += var[x] * var[y];
    }
  }
  IloModel mdl(env);

  for (IloInt x = 0; x < n; x++) {
    for (IloInt y = 0; y < n; y++) {
      mdl.add(c[x][y] ==1);
    }
  }
  IloCP cp(mdl);
  cp.startNewSearch();
  while (cp.next()) {
    cp.out() << cp.domain(var) << std::endl;
  }
  cp.end();
  env.end();
  return 0;
}
​

------------------------------
Olivier Lhomme
------------------------------