Compilare: user.cpp: In function ‘int main()’: user.cpp:46:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<strlen(s);k++) ^ user.cpp:38:17: warning: unused variable ‘ok’ [-Wunused-variable] int n,m,i,j,ok,p,u,X1,Y1,X2,Y2,x,y,k; ^ user.cpp:38:20: warning: unused variable ‘p’ [-Wunused-variable] int n,m,i,j,ok,p,u,X1,Y1,X2,Y2,x,y,k; ^ user.cpp:38:22: warning: unused variable ‘u’ [-Wunused-variable] int n,m,i,j,ok,p,u,X1,Y1,X2,Y2,x,y,k; ^ user.cpp:38:36: warning: unused variable ‘x’ [-Wunused-variable] int n,m,i,j,ok,p,u,X1,Y1,X2,Y2,x,y,k; ^ user.cpp:38:38: warning: unused variable ‘y’ [-Wunused-variable] int n,m,i,j,ok,p,u,X1,Y1,X2,Y2,x,y,k; ^ user.cpp:69:40: warning: ‘minj’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<a[mini][minj]<<" "<<mini<<" "<<minj; ^ user.cpp:69:25: warning: ‘mini’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<a[mini][minj]<<" "<<mini<<" "<<minj; ^ user.cpp:58:17: warning: ‘Y2’ may be used uninitialized in this function [-Wmaybe-uninitialized] BF(X2,Y2,n,m,b); ^ user.cpp:58:17: warning: ‘X2’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:57:20: warning: ‘Y1’ may be used uninitialized in this function [-Wmaybe-uninitialized] BF(X1,Y1,n,m,a); ^ user.cpp:57:20: warning: ‘X1’ may be used uninitialized in this function [-Wmaybe-uninitialized]