Compilare: user.cpp: In function ‘void verifica()’: user.cpp:33:48: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(j=1; j<=n; j++)if(cifra(j, b[c[v[i]]],i,b[c[o[j]]]))return; ^ user.cpp:33:61: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(j=1; j<=n; j++)if(cifra(j, b[c[v[i]]],i,b[c[o[j]]]))return; ^ user.cpp: In function ‘int main()’: user.cpp:55:26: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘char*’ [-Wformat=] scanf("%d", &v[i]); ^ user.cpp:57:26: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘char*’ [-Wformat=] scanf("%d", &o[i]); ^ user.cpp:52:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, k; ^ user.cpp:52:15: warning: unused variable ‘k’ [-Wunused-variable] int i, j, k; ^