suma4.cpp: In function `int vecinx(int, int)': suma4.cpp:30: warning: control reaches end of non-void function suma4.cpp: In function `int vecinz(int, int)': suma4.cpp:43: warning: control reaches end of non-void function suma4.cpp: In function `void afisare()': suma4.cpp:95: warning: `int x' might be used uninitialized in this function suma4.cpp:95: warning: `int z' might be used uninitialized in this function