Compilare: user.cpp: In function ‘int main()’: user.cpp:42:40: warning: unused variable ‘y1’ [-Wunused-variable] f64 xst = 0.0f, xdr = 1000.0f + EPS, y1, y2, s1, s2; ^ user.cpp:42:44: warning: unused variable ‘y2’ [-Wunused-variable] f64 xst = 0.0f, xdr = 1000.0f + EPS, y1, y2, s1, s2; ^ user.cpp:37:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.cpp:39:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lf%lf", &x[i], &y[i]); ^