main
{
writeln("version of cplex=" + cplex.getVersion());
}

does not work in 12.6.3 but in 12.7.1 this gives

version of cplex=12.7.1.0

thanks @@trebron270002SMPG​ for telling me this at https://www.ibm.com/developerworks/community/forums/html/topic?id=77777777-0000-0000-0000-000014619513&ps=25#repliesPg=0

Alex Fleischer

PS:

Many how to with OPL at https://www.linkedin.com/pulse/how-opl-alex-fleischer/

Many examples from a very good book : https://www.linkedin.com/pulse/model-building-oplcplex-alex-fleischer/

Making optimization simple : https://www.linkedin.com/pulse/making-decision-optimization-simple-alex-fleischer/