Small CPLEX C++ API tutorial

Prerequisites

• CPLEX must be installed, of course. Academics can obtain it via the IBM Academic Initiative.
• You also need a modern version of GCC, that supports at least C++14.

Compile and run

• Get the code: git clone https://github.com/alberto-santini/cplex-example.git.
• Move to the new directory: cd cplex-example.
• Create a build directory: mkdir build.
• Move to the build directory: cd build.
• Run cmake: cmake -DCPLEX_ROOT_DIR=</path/to/ilog> -DCMAKE_BUILD_TYPE=Debug ...
  • The path to your CPLEX installation must be such that </path/to/ilog>/cplex/include/ilcplex/cplex.h exists.
  • If your compiler is in a non-standard location, you can use -DCMAKE_CXX_COMPILER=</path/to/compiler>.
  • Change Debug into Release if you want to compile in release mode.
• Run make: make.
• Run the executable: ./cplex_example.

Structure

The Graph class (src/graph.h) is a minimal description of a graph; it only stores the number of nodes and the distance matrix. The graph is created randomly, with nodes lying on a plane and euclidean distances. The Solver class (src/solver.h) does all the CPLEX magic: it builds the model, it solves it, and it prints the solution.

License

The present work is distributed under the terms of ghe GNU General Public License v3 (see the LICENSE file).