Compilare: user.cpp: In function ‘int main()’: user.cpp:42:57: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d %d %d\n", &x0, &a, &b, &m, &Q); ^ user.cpp:48:29: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c, 10005, fin); ^