FMI4cpp is a brand new FMI 2.0 implementation for C++.  It has been written from the ground up in modern C++. The API is very similar to FMI4j.

All dependencies are available through vcpkg.

#include <fmicpp/fmicpp.hpp>

using namespace fmicpp::fmi2::import;

int main() {

    Fmu fmu("path/to/fmu.fmu");
    auto slave = fmu.asCoSimulationFmu().newInstance();
    double stop = 10.0;
    double stepSize = 1.0/100;
    double t;
    while ( (t = slave->getSimulationTime()) <= stop) {
        fmi2Status status = slave->doStep(stepSize);
        if (status != fmi2OK) {

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