#include <stdio.h>
#include <conio.h>
void main(void)
{
      float yuzde = 0;
      clrscr();
      printf("\n Bir not girin (0-100): ");
      scanf("%f",&yuzde);
      fflush(stdin);
      if( yuzde >= 85 && yuzde <= 100 )
            printf("\n PEKIYI ");
      else if( yuzde >= 75 && yuzde < 84 )
            printf("\n IYI ");
      else if( yuzde >= 55 && yuzde < 69 )
            printf("\n ORTA");
      else if( yuzde >= 45 && yuzde < 54 )
            printf("\n GECER ");
      else if( yuzde >= 0 && yuzde < 20 )
            printf("\n KALDI");
      else
            printf("\n GECERSIZ NOT!...");
      getch();
}