Compilare: user.cpp: In function ‘int c3(int)’: user.cpp:24:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp:15:15: warning: iteration 3 invokes undefined behavior [-Waggressive-loop-optimizations] car[i]=false; ~~~~~~^~~~~~ user.cpp:14:18: note: within this loop for(int i=0;i<100;i++) ~^~~~