Compilare: main.cpp: In function 'int main()': main.cpp:29:41: warning: 'y1' may be used uninitialized in this function [-Wmaybe-uninitialized] if((i==x0 && i+1==y0) || (i==x1 && i+1==y1)) ~~~~~~~^~~~~~~~~~~ main.cpp:29:31: warning: 'x1' may be used uninitialized in this function [-Wmaybe-uninitialized] if((i==x0 && i+1==y0) || (i==x1 && i+1==y1)) ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:29:19: warning: 'y0' may be used uninitialized in this function [-Wmaybe-uninitialized] if((i==x0 && i+1==y0) || (i==x1 && i+1==y1)) ~~~~~~~^~~~~~~~~~~ main.cpp:29:9: warning: 'x0' may be used uninitialized in this function [-Wmaybe-uninitialized] if((i==x0 && i+1==y0) || (i==x1 && i+1==y1)) ^~