Compilare: user.cpp: In function ‘int main()’: user.cpp:18:11: warning: unused variable ‘t’ [-Wunused-variable] int i,j,t,na,tmax=0,n,S=0,minim=0,k,valmin;; ^ user.cpp:18:13: warning: unused variable ‘na’ [-Wunused-variable] int i,j,t,na,tmax=0,n,S=0,minim=0,k,valmin;; ^ user.cpp:18:16: warning: unused variable ‘tmax’ [-Wunused-variable] int i,j,t,na,tmax=0,n,S=0,minim=0,k,valmin;; ^ user.cpp:18:37: warning: ‘k’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i,j,t,na,tmax=0,n,S=0,minim=0,k,valmin;; ^