Compilare: user.cpp: In function ‘int main()’: user.cpp:86:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf%d", &m, &n, &k); ^ user.cpp:89:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] double x, y; scanf("%lf%lf", &x, &y); ^