Compilare: user.cpp: In function ‘int main()’: user.cpp:23:16: warning: unused variable ‘m’ [-Wunused-variable] double m = y/x; ^ user.cpp:13:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d", &n); ^ user.cpp:16:70: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lf%lf%lf", &cerc[i].xx, &cerc[i].yy, &cerc[i].d); ^ user.cpp:18:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&m); ^ user.cpp:22:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lf%lf", &x, &y); ^