Compilare: main.cpp: In function 'void dinamica()': main.cpp:36:9: warning: unused variable 'sum' [-Wunused-variable] int sum = 0, i, j; ^~~ main.cpp:36:18: warning: unused variable 'i' [-Wunused-variable] int sum = 0, i, j; ^ main.cpp:36:21: warning: unused variable 'j' [-Wunused-variable] int sum = 0, i, j; ^ main.cpp:46:35: warning: iteration 3 invokes undefined behavior [-Waggressive-loop-optimizations] int X = x + dx[dir]; ~~~~~~^ main.cpp:45:31: note: within this loop for(int dir=0; dir<=3; ++dir) { ~~~^~~