#include<stdio.h>
void main()
{float score;
int card;
scanf("%f",&score);
if((score<0) || (score>100))
printf("the number you have put into is wrong.\n");
else
if(score>=90)
card=90;
else
if((score>=80) && (score<90))
card=80;
else
if((score>=70) && (score<80))
card=70;
else
if((score>=60) && (score<70))
card=60;
else card=50;
switch(card)
{case 90: printf("the students's grade is A.\n");break;
case 80: printf("the students's grade is B.\n");break;
case 70: printf("the students's grade is C.\n");break;
case 60: printf("the students's grade is D.\n");break;
case 50: printf("the students's grade is E.\n");break;
}
}
写于2007年11月
