Compilare: user.cpp: In function ‘void add_trie(TRIE*)’: user.cpp:31:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!node->edges[edge]){ ^ user.cpp:39:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] node->edges[edge] = aux; ^ user.cpp:41:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] add_trie(node->edges[edge]); ^ user.cpp:45:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] add_trie(node->edges[edge]); ^ user.cpp: In function ‘void delete_trie(TRIE*)’: user.cpp:57:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] delete_trie(node->edges[edge]); ^ user.cpp: In function ‘void afisare_trie(TRIE*)’: user.cpp:65:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!node->edges[edge]){ ^ user.cpp:70:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] afisare_trie(node->edges[edge]); ^ user.cpp: In function ‘void prefix_trie(TRIE*, int)’: user.cpp:78:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!node->edges[edge]){ ^ user.cpp:82:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(node->edges[edge]->prefix < 1){ ^ user.cpp:88:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] prefix_trie(node->edges[edge], len + 1); ^