Compilare: user.cpp: In function ‘int main()’: user.cpp:68:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++nrprim[ v[i][1] ]; ^ user.cpp:69:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] prim[ v[i][1] ].push_back( i ); ^ user.cpp:77:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] c = v[i][ v[i][0] ]; ^ user.cpp:79:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] for ( k = 0; k < nrprim[c]; ++k ) ^ user.cpp:81:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if ( prim[c][k] > i ) ^ user.cpp:85:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] nrnext[i] = nrprim[c] - k; ^ user.cpp:86:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] for ( ; k < nrprim[c]; ++k ) ^ user.cpp:88:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] pnext[i].push_back( prim[c][k] ); ^