Compilare: main.cpp: In function 'void afisare()': main.cpp:13:33: warning: unused variable 'nr4' [-Wunused-variable] int l,c,c1o,c2o,nr1,nr2,nr3,nr4; ^~~ main.cpp:16:9: warning: 'l' may be used uninitialized in this function [-Wmaybe-uninitialized] if (l<=n && (c+1)<=n/2) cout<<l<<c<<"\n"; ^~ main.cpp:16:18: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] if (l<=n && (c+1)<=n/2) cout<<l<<c<<"\n"; ~~~~~^~~~~~~~~~~~~