Listing Program Luas dan Keliling Lingkaran

#include
main()
{
int r;double K,L;float phi;
phi=3.14;
printf("Masukkan jari-jari = ");scanf("%d",&r);

K=2*phi*r;
L=phi*r*r;
printf("\nKeliling = %g\n",K);printf("Luas = %g\n",L);
}