#include extern int regression_1008(); int main(int, char*[]) { using f_ptr = int (*)(); const f_ptr regressions[] = { ®ression_1008 }; const int sizeof_regressions = sizeof(regressions) / sizeof(regressions[0]); int r = 0; for (std::size_t i = 0; i < sizeof_regressions; ++i) { f_ptr f = regressions[0]; r += static_cast(f() != 0); } return r; }