#include
#include
int main()
{
  float grade;
  clrscr();
  while(1){
    printf("\n Enter a grade:");
    scanf("%f",&grade);
    if (grade >= 17 && grade <= 20)
       printf("\n grade=%5.2f, score=%c", grade, 'A');
    else
     if (grade >= 15 && grade < 17)
       printf("\n grade=%5.2f, score=%c", grade, 'B');
    else
    if (grade >= 12 && grade < 15)
       printf("\n grade=%5.2f, score=%c", grade, 'C');
    else
    if (grade < 12)
       printf("\n grade=%5.2f, score=%c", grade, 'D');
  }//end of while
}

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