Compilare: main.cpp: In function 'int comparare(int*, int*, int, int)': main.cpp:71:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:148:43: warning: iteration 802 invokes undefined behavior [-Waggressive-loop-optimizations] for( i = 0; i <= 2000; ++i ) query[i] = 0; ~~~~~~~~~^~~ main.cpp:148:19: note: within this loop for( i = 0; i <= 2000; ++i ) query[i] = 0; ~~^~~~~~~