test_runner ("An integer: %dEND", 98765);
test_runner ("A floating point number: %gEND", 3.142);
test_runner ("A floating point number with default precision: %fEND", 1.234);
+ test_runner ("A floating point number with given precision: %.20fEND", 1.234);
test_runner ("A literal %%");
test_runner ("and %ss a %sq of %d different %f examples %g of 100%% conversions.",