Compilare: user.cpp: In function ‘int main()’: user.cpp:12:21: warning: unused variable ‘p’ [-Wunused-variable] int i,n,z,s = 0,p = 1,o=0,nc, f = 1; ^ user.cpp:12:27: warning: unused variable ‘o’ [-Wunused-variable] int i,n,z,s = 0,p = 1,o=0,nc, f = 1; ^ user.cpp:72:13: warning: ‘nc’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (i = 1; i <= nc; i ++) ^