Calculate distance, velocity

#include

int main(void) {
double seconds = 0;

printf("Enter seconds : ");
scanf("%lg", &seconds);

printf("falling time : %g seconds\n", seconds);
printf("traveld distance : %g meters\n", .5 * 9.81 * seconds * seconds);
printf("object velocity : %g m/s\n", 9.81 * seconds);

return 0;
}