Originally posted by: rourou

Once I write "IloCplex cplex(model);" in my code, it throws the following:

Unhandled exception at 0x7c812a6b in increasing.exe: Microsoft C++ exception: IloCplex::Exception at memory location 0x001230ec.

and stop at stack frame: kernel32.dll!7c812a6b()

once delete "IloCplex cplex(model);" ,it goes well.
How to solve this problem?
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#DecisionOptimization

Originally posted by: SystemAdmin

How do you instantiate IloModel? You have to use the constructor that takes an IloEnv argument:

IloEnv env;
IloModel model(env);
IloCplex cplex(model);

Could you post a little more code? Or send it to me at daniel(dot)junglas(at)de(dot)ibm(dot)com so that I can check?
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#DecisionOptimization

Originally posted by: SystemAdmin

In the code you sent me I got an exception when you called IloCplex::getValue() because you did not call IloCplex::solve() before.
Can you please post the complete call trace as given by Visual Studio?
Also, you should wrap your code into this

#include <iostream>
 
try {
   // Your code here
   ...
} catch (IloException& e) {
   std::cerr << "IloException: " << e << std::endl;
} catch (std::exception& e) {
   std::cerr << "Standard exception: " << e.what() << std::endl;
} catch (...) {
   std::cerr << "Some other exception!" << std:.endl;
}

This should give you more information about what went wrong.
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Originally posted by: rourou

I added the "try...catch" in my code, and it told me the license file couldn't be found.
So i installed the license file according to the support file again, and it worked finally.

Thank you very much
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#DecisionOptimization