Compilare: main.cpp: In function 'void fill_alg(int, int)': main.cpp:47:29: warning: iteration 4 invokes undefined behavior [-Waggressive-loop-optimizations] if(ok(l+dx[i],c+dy[i])) ~~~~^ main.cpp:46:18: note: within this loop for(int i=0;i<=4;i++) ~^~~ main.cpp: In function 'void task2()': main.cpp:86:10: warning: 'code' may be used uninitialized in this function [-Wmaybe-uninitialized] char code; ^~~~ main.cpp:100:22: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<l<<" "<<c<<"\n"; ^~~~ main.cpp:100:14: warning: 'l' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<l<<" "<<c<<"\n"; ^~~