Compilare: main.cpp: In function 'void dfs(trie*)': main.cpp:38:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i < nod->v.size(); i++){ ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:46:25: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'int' [-Wformat=] fscanf (fin,"%d\n",n); ^ main.cpp:45:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%s\n",A); ^ main.cpp:46:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d\n",n); ^ main.cpp:49:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%s\n",s); ^