#include <stdio.h>

int main()
{
  int h;
  int flag=1;



    do
    {
    printf ("Enter height\n");
    scanf("%d",&h);
    if(h>23 || h<0)
    flag=1;
    else
    {
    flag=0;
    printf("height is %d",h);
    }
    }while(flag==1);



  return 0;
}