Compilare: user.cpp: In function ‘int main()’: user.cpp:33:30: warning: format ‘%lf’ expects argument of type ‘double’, but argument 3 has type ‘int’ [-Wformat=] fprintf(out, "%.10lf\n", 1); ^ user.cpp:12:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &t); ^ user.cpp:16:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lld%lld%lld", &n, &m, &x); ^ user.cpp:19:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lld", &el); ^