In C and C++ programs , a source of particularly difficult-to-diagnose errors is the nondeterministic behavior that results from reading uninitialized variables ; this behavior can vary between platforms , builds , and even from run to run .
ADP PROPN CCONJ PROPN NOUN , DET NOUN ADP ADV ADJ NOUN AUX DET ADJ NOUN DET VERB ADP VERB ADJ NOUN ; DET NOUN AUX VERB ADP NOUN , NOUN , CCONJ ADV ADP NOUN PART VERB .