5分制及5级评论之间的转换

#include<stdio.h>
void main()
{   int  score;
    printf("please input 5 grade score:");
    scanf("%d",&score);
 switch(score)
 {case 5: printf("very good!");break;
 case 4: printf("good.");break;
 case 3: printf("pass.");break;
 case 2: printf("fail.");break;
 default: printf("error.");
    }
}