Originally posted by: SystemAdmin

[niharika said:]

HI
my ilog code now cannot read data from the text file, it gives  teh error message "cannot open the specified file"
Please HELP  ME THIS TIME
I am pasting my code below
int main(int argc, char *argv)
{
IloEnv env;
try {

IloInt i, j;
IloNumArray weight(env);
IloInt nbNodes;
IloInt topK = 2;
IntMatrix arcs(env);

//char ifilename[128];
//char ifilename = "example.txt";
char* wfilename = "../results/result.txt";

/*if (argc > 1)
{
topK = atoi(argv[1]);
nbNodes = atoi(argv[2]);
//sprintf(ifilename, "../data/%d.dat", nbNodes);
} */

ifstream file;
file.open("example.txt");
if (!file) {
cerr << "'ERROR: could not open file '" //<< ifilename<br /> << "' for reading" << endl;<br /> cerr << "usage:    " << argv[0] << " <file>" << endl;<br /> throw(-1);
}

file >> weight >> arcs;
file.close();

nbNodes = weight.getSize();

// X: X[i][j]
NumVarMatrix X(env, nbNodes);
for(i = 0; i < nbNodes; i++)<br /> X[i] = IloNumVarArray(env, nbNodes, 0, 1, ILOINT);

IloNumVarArray N(env, nbNodes, 0, 1, ILOINT);

ofstream wfile(wfilename, ios::app);
if(!wfile)
{
cerr<<"ERROR: could not open file '" //<< ifilename<br /> << "' for reading" << endl;<br /> cerr << "usage:    " << argv[0] << " <file>" << endl;<br /> throw(-1);
}

IloTimer timer(env);
timer.start();
IloSolution sol1 = exProblem(env, weight, X,N,topK,arcs);
timer.stop();
wfile << sol1.getObjectiveValue() << "\t" << timer.getTime() << "\t";

wfile.close();
}
catch(IloException &e) {
cerr << "ERROR: " << e << endl;<br /> }
catch( ... ) {
cerr << "ERROR" << endl;<br /> }
env.end();

return 0;
}

the program shows no Compilation or link error but does not open the file for reading. the file is present in the same directory
#CPLEXOptimizers
#DecisionOptimization