#include<stdio.h>
void main (void)

{

int year;

printf("how old are you?\n");

scanf("%d",&year);

switch {

case1: year<30
printf("you are young");
break;

case2: year>=30&&year<60
printf("chuunenn.");
break;

case2: year>=59&&year<100
printf("otoshiyori.");
break;

default: year>=100
printf("you are lying! aren't you??!!.\n");

}
printf("The program end.Thank you for answer.\n")
}