#include <stdio.h>
int main(void)
{
double light_speed = 300000; // ºûÀÇ ¼Óµµ¸¦ ÀúÀåÇÏ´Â º¯¼ö(300000km/sec)
double distance = 149600000; // žç°ú Áö±¸ »çÀÌ °Å¸®¸¦ ÀúÀåÇÏ´Â º¯¼ö
// 149600000km·Î ÃʱâÈÇÑ´Ù.
double time; // ½Ã°£À» ³ªÅ¸³»´Â º¯¼ö
time = distance / light_speed; // °Å¸®¸¦ ºûÀÇ ¼Óµµ·Î ³ª´«´Ù.
time = time / 60.0; // Ãʸ¦ ºÐÀ¸·Î º¯È¯ÇÑ´Ù.
printf("ºûÀÇ ¼Óµµ´Â %lfkm/s \n", light_speed);
printf("žç°ú Áö±¸¿ÍÀÇ °Å¸® %lfkm \n", distance);
printf("µµ´Þ ½Ã°£Àº %lfÃÊ\n", time); // ½Ã°£À» Ãâ·ÂÇÑ´Ù.
return 0;
}