Compilare: user.cpp: In function ‘int main()’: user.cpp:9:15: warning: unused variable ‘op’ [-Wunused-variable] int n,m,k,op,nr,i,j,sum,li,ci; ^ user.cpp:9:18: warning: unused variable ‘nr’ [-Wunused-variable] int n,m,k,op,nr,i,j,sum,li,ci; ^ user.cpp:9:25: warning: unused variable ‘sum’ [-Wunused-variable] int n,m,k,op,nr,i,j,sum,li,ci; ^ user.cpp:23:9: warning: unused variable ‘k1’ [-Wunused-variable] int k1[4]={0,0,1,-1},k2[4]={-1,1,0,0},nchei,ncam; ^ user.cpp:23:26: warning: unused variable ‘k2’ [-Wunused-variable] int k1[4]={0,0,1,-1},k2[4]={-1,1,0,0},nchei,ncam; ^ user.cpp:23:49: warning: unused variable ‘ncam’ [-Wunused-variable] int k1[4]={0,0,1,-1},k2[4]={-1,1,0,0},nchei,ncam; ^