Compilare: main.cpp: In function 'int main()': main.cpp:48:33: warning: 'z2' may be used uninitialized in this function [-Wmaybe-uninitialized] if(i==z0 && i+1==z1 && i+2==z2) ~~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp:48:22: warning: 'z1' may be used uninitialized in this function [-Wmaybe-uninitialized] if(i==z0 && i+1==z1 && i+2==z2) ~~~~~~^~~~~~~~~~ main.cpp:48:13: warning: 'z0' may be used uninitialized in this function [-Wmaybe-uninitialized] if(i==z0 && i+1==z1 && i+2==z2) ^~ main.cpp:39:45: warning: 'y1' may be used uninitialized in this function [-Wmaybe-uninitialized] if((i==x0 && i+1==y0) || (i==x1 && i+1==y1)) ~~~~~~~^~~~~~~~~~~ main.cpp:39:35: warning: 'x1' may be used uninitialized in this function [-Wmaybe-uninitialized] if((i==x0 && i+1==y0) || (i==x1 && i+1==y1)) ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:39:23: warning: 'y0' may be used uninitialized in this function [-Wmaybe-uninitialized] if((i==x0 && i+1==y0) || (i==x1 && i+1==y1)) ~~~~~~~^~~~~~~~~~~ main.cpp:39:13: warning: 'x0' may be used uninitialized in this function [-Wmaybe-uninitialized] if((i==x0 && i+1==y0) || (i==x1 && i+1==y1)) ^~