Compilare: user.cpp: In function ‘int main()’: user.cpp:41:57: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘double’ [-Wformat=] fprintf(fo,"%lld %lld\n", floor(supp * y), y); ^ user.cpp:12:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &n); ^ user.cpp:13:57: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i = 1; i <= n; i++) fscanf(fi,"%lld", &a[i]); ^ user.cpp:14:57: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i = 1; i <= n; i++) fscanf(fi,"%lld", &b[i]); ^