Compilare: main.cpp: In function 'int main()': main.cpp:11:11: warning: unused variable 'j' [-Wunused-variable] int i,j,k,n,mij,mij1,dr,dr1,st,st1,elem,el,s,cel; ^ main.cpp:11:21: warning: unused variable 'mij1' [-Wunused-variable] int i,j,k,n,mij,mij1,dr,dr1,st,st1,elem,el,s,cel; ^~~~ main.cpp:11:29: warning: unused variable 'dr1' [-Wunused-variable] int i,j,k,n,mij,mij1,dr,dr1,st,st1,elem,el,s,cel; ^~~ main.cpp:11:36: warning: unused variable 'st1' [-Wunused-variable] int i,j,k,n,mij,mij1,dr,dr1,st,st1,elem,el,s,cel; ^~~ main.cpp:11:50: warning: unused variable 'cel' [-Wunused-variable] int i,j,k,n,mij,mij1,dr,dr1,st,st1,elem,el,s,cel; ^~~