#include <皮耐stdio.h>
int main (void)
{
int score ;
char grade;
printf("enter the test score
(0-100):");
scanf("%d",&score);
if(score >燃销春=90)
grade='A'斗桐;
else if(score >=80)
grade='B';
else if(score >=70)
grade='C';
else if(score >=60)
grade='D';
else
grade='E';
printf("the grade is: %c\n",grade);
}