Compilare: user.cpp: In function ‘int main()’: user.cpp:8:15: warning: unused variable ‘minl’ [-Wunused-variable] int n,i,j,minl,maxl,minc,maxc,x,y,l; ^ user.cpp:8:20: warning: unused variable ‘maxl’ [-Wunused-variable] int n,i,j,minl,maxl,minc,maxc,x,y,l; ^ user.cpp:8:25: warning: unused variable ‘minc’ [-Wunused-variable] int n,i,j,minl,maxl,minc,maxc,x,y,l; ^ user.cpp:8:30: warning: unused variable ‘maxc’ [-Wunused-variable] int n,i,j,minl,maxl,minc,maxc,x,y,l; ^ user.cpp:19:9: warning: variable ‘b’ set but not used [-Wunused-but-set-variable] int b[n+2][n+2]; ^ user.cpp:74:9: warning: ‘z’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<l-z+1; ^