Compilare: user.cpp: In function ‘int main()’: user.cpp:46:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d\n", &n); ^ user.cpp:48:30: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s[i], sMax, in); ^ user.cpp:100:17: warning: ‘nodC’ may be used uninitialized in this function [-Wmaybe-uninitialized] i ^= (1 << t); ^