Compilare: user.cpp: In function ‘int main()’: user.cpp:14:19: warning: unused variable ‘m’ [-Wunused-variable] int s,i,j,k,n,m,l,sum=0,sa,t=1,suma=0;; ^ user.cpp:14:21: warning: unused variable ‘l’ [-Wunused-variable] int s,i,j,k,n,m,l,sum=0,sa,t=1,suma=0;; ^ user.cpp:14:29: warning: unused variable ‘sa’ [-Wunused-variable] int s,i,j,k,n,m,l,sum=0,sa,t=1,suma=0;; ^ user.cpp:14:32: warning: unused variable ‘t’ [-Wunused-variable] int s,i,j,k,n,m,l,sum=0,sa,t=1,suma=0;; ^ user.cpp:14:36: warning: unused variable ‘suma’ [-Wunused-variable] int s,i,j,k,n,m,l,sum=0,sa,t=1,suma=0;; ^