Compilare: user.cpp: In function ‘void spider(int, int)’: user.cpp:45:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (ok(i,j) && !b[i][j]) ^ user.cpp:147:22: warning: ‘ma2’ may be used uninitialized in this function [-Wmaybe-uninitialized] ma2++; ^ user.cpp: In function ‘int main()’: user.cpp:104:19: warning: ‘ma2’ may be used uninitialized in this function [-Wmaybe-uninitialized] int ma1,ma2; ^ user.cpp:147:22: warning: ‘ma2’ may be used uninitialized in this function [-Wmaybe-uninitialized] ma2++; ^ user.cpp:104:19: note: ‘ma2’ was declared here int ma1,ma2; ^ user.cpp:147:22: warning: ‘ma2’ may be used uninitialized in this function [-Wmaybe-uninitialized] ma2++; ^ user.cpp:104:19: note: ‘ma2’ was declared here int ma1,ma2; ^ user.cpp:147:22: warning: ‘ma2’ may be used uninitialized in this function [-Wmaybe-uninitialized] ma2++; ^ user.cpp:104:19: note: ‘ma2’ was declared here int ma1,ma2; ^ user.cpp:147:22: warning: ‘ma2’ may be used uninitialized in this function [-Wmaybe-uninitialized] ma2++; ^ user.cpp:104:19: note: ‘ma2’ was declared here int ma1,ma2; ^