Compilare: user.cpp: In function ‘int main()’: user.cpp:13:26: warning: variable ‘cf2’ set but not used [-Wunused-but-set-variable] {int i,j,m,n,d=0,l,c,cf1,cf2,lf1,lf2,ok; ^ user.cpp:13:34: warning: variable ‘lf2’ set but not used [-Wunused-but-set-variable] {int i,j,m,n,d=0,l,c,cf1,cf2,lf1,lf2,ok; ^ user.cpp:13:8: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] {int i,j,m,n,d=0,l,c,cf1,cf2,lf1,lf2,ok; ^ user.cpp:41:55: warning: ‘lf1’ may be used uninitialized in this function [-Wmaybe-uninitialized] { a[l][c]=-1; ^ user.cpp:13:22: warning: ‘cf1’ may be used uninitialized in this function [-Wmaybe-uninitialized] {int i,j,m,n,d=0,l,c,cf1,cf2,lf1,lf2,ok; ^