Compilare: user.cpp: In function ‘int main()’: user.cpp:40:24: warning: embedded ‘\0’ in format [-Wformat-contains-nul] fprintf(e, "%d\0", sub); ^ user.cpp:11:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^ user.cpp:14:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%f", &v[i]); ^