Compilare: main.cpp: In function 'int main()': main.cpp:137:22: warning: 'y2' may be used uninitialized in this function [-Wmaybe-uninitialized] if(mat[x2][y2]==1) ~~~~~~~~~~^ main.cpp:137:22: warning: 'x2' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:136:29: warning: 'y1' may be used uninitialized in this function [-Wmaybe-uninitialized] discount_lee(x1, y1); ^ main.cpp:136:29: warning: 'x1' may be used uninitialized in this function [-Wmaybe-uninitialized]