Compilare: user.cpp: In function ‘void leed2()’: user.cpp:95:17: warning: unused variable ‘k’ [-Wunused-variable] int k=0; ^ user.cpp:98:17: warning: unused variable ‘val’ [-Wunused-variable] int val=d[ii+qi[dir]][jj+qj[dir]]; ^ user.cpp:106:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int z=0;z<mi.size()-1;z++){ ^ user.cpp:108:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int p=z;p<mi.size();p++) ^ user.cpp: In function ‘int ver(char, int, int)’: user.cpp:47:1: warning: control reaches end of non-void function [-Wreturn-type] } ^