Compilare: user.cpp: In function ‘void Bordare()’: user.cpp:18:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp: In function ‘void Lee()’: user.cpp:36:19: warning: unused variable ‘s’ [-Wunused-variable] int i,j,x,y,k,s=0; ^ user.cpp: In function ‘int main()’: user.cpp:72:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j; ^ user.cpp:72:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^