Compilare: user.cpp: In function ‘int main()’: user.cpp:6:6: warning: variable ‘e’ set but not used [-Wunused-but-set-variable] int e,f,c,d,i,j,n,m,min,min2=999999,min3=999999,min4=999999,k=0; ^ user.cpp:6:12: warning: variable ‘d’ set but not used [-Wunused-but-set-variable] int e,f,c,d,i,j,n,m,min,min2=999999,min3=999999,min4=999999,k=0; ^ user.cpp:6:8: warning: ‘f’ may be used uninitialized in this function [-Wmaybe-uninitialized] int e,f,c,d,i,j,n,m,min,min2=999999,min3=999999,min4=999999,k=0; ^