Compilare: user.cpp: In function ‘int main()’: user.cpp:59:32: warning: statement has no effect [-Wunused-value] graf[k][l]; ^ user.cpp:30:11: warning: unused variable ‘n’ [-Wunused-variable] int t,n,rad[20]={},x,y; ^ user.cpp:30:24: warning: unused variable ‘x’ [-Wunused-variable] int t,n,rad[20]={},x,y; ^ user.cpp:30:26: warning: unused variable ‘y’ [-Wunused-variable] int t,n,rad[20]={},x,y; ^ user.cpp:63:53: warning: ‘radacina’ may be used uninitialized in this function [-Wmaybe-uninitialized] parcurgere(cd,radacina,graf,0); ^