#include <stdio.h>
#include <string.h>
int main()
{
char key[] = "C";
char buffer[80]="";
do {
printf("ÀÓº£µðµå ÀåÄ¡¿¡ °¡Àå ¸¹ÀÌ »ç¿ëµÇ´Â ¾ð¾î´Â? ");
gets_s(buffer, sizeof(buffer));
} while (strcmp(key, buffer) != 0);
printf("¸Â¾Ò½À´Ï´Ù!");
return 0;
}