Compilare: main.cpp: In function 'void dfs(trie*)': main.cpp:40:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < nod->w.size(); i++){ ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:47:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] fin>> a + 1; ~~^~~ main.cpp:85:40: warning: array subscript has type 'char' [-Wchar-subscripts] while(nod != r && nod->f[ a[i] ] == NULL){ ^ main.cpp:88:25: warning: array subscript has type 'char' [-Wchar-subscripts] if(nod->f[ a[i] ] != NULL){ ^ main.cpp:89:32: warning: array subscript has type 'char' [-Wchar-subscripts] nod = nod->f[ a[i] ]; ^