Compilare: user.cpp: In function ‘void intersect(float, float, float, float, float, float, float&, float&, float&, float&)’: user.cpp:43:10: warning: variable ‘b’ set but not used [-Wunused-but-set-variable] float a,b,h; ^ user.cpp: In function ‘int main()’: user.cpp:87:19: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:89:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%f %f %f",&X[i],&Y[i],&R[i]); ^