Compilare: user.cpp: In function ‘void bordare()’: user.cpp:52:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp: In function ‘void lee()’: user.cpp:77:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,cl,cc,l,c; ^ user.cpp: In function ‘int main()’: user.cpp:111:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j; ^ user.cpp:111:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^