Compilare: main.cpp: In function 'void numara(trie*)': main.cpp:87:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(nod->fii[i] and nod->fii[i]->nrcuv == Na) ^ main.cpp: In function 'int main()': main.cpp:96:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d\n", &Na); ^ main.cpp:98:25: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(sir, 302, fin); ^ main.cpp:105:29: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(sir, 302, fin); ^ main.cpp:114:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d\n", &Nb); ^ main.cpp:117:29: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(sir, 302, fin); ^