Compilare: user.cpp: In function ‘int divide(romb, int, int)’: user.cpp:79:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘void read()’: user.cpp:90:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &t); ^ user.cpp:93:64: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf %lf %d %lf %lf\n", &dX, &dY, &k, &E.x, &E.y); ^ user.cpp: In function ‘int main()’: user.cpp:100:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("romb.in", "r", stdin); ^ user.cpp:101:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("romb.out", "w", stdout); ^