Compilare: main.cpp: In function 'int main()': main.cpp:100:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(a[i][j] == strlen(dir)-1) ~~~~~~~~^~~~~~~~~~~~~~~~ main.cpp:86:17: warning: iteration 1003 invokes undefined behavior [-Waggressive-loop-optimizations] if(dir[i] == 'N') ~~~~~^ main.cpp:85:22: note: within this loop for(int i = 0; i <= MAXDIR; i++) ~~^~~~~~~~~