Compilare: user.cpp: In function ‘int main()’: user.cpp:56:9: warning: unused variable ‘l’ [-Wunused-variable] int l,c,suma=0,z,a,b; ^ user.cpp:56:11: warning: unused variable ‘c’ [-Wunused-variable] int l,c,suma=0,z,a,b; ^ user.cpp:73:22: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] afisare(a,b,suma); ^ user.cpp:73:22: warning: ‘a’ may be used uninitialized in this function [-Wmaybe-uninitialized]