Compilare: main.cpp: In function 'int main()': main.cpp:59:38: warning: use of 'll' length modifier with 'f' type character has either no effect or undefined behavior [-Wformat=] fprintf (fout,"%.6llf\n",s[i]); ^ main.cpp:25:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&n,&l); ^ main.cpp:28:74: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%lf %lf %lf %lf %d\n",&a[i],&b[i],&k[i],&q[i],&v[i]); ^