case 8: printf("grade=Bn); break case 7: printf("grade=CIn"); break case 6: printf("grade=Dn"); break case 543 case case 2 case 1 case 0: printf( grade=En"); break default: printf( The score is out of range! n") 程序演示] 程序运行情况如下: Input a score(0100): 85K grade=Bcase 8: printf("grade=B\n"); break; case 7: printf("grade=C\n"); break; case 6: printf("grade=D\n"); break; case 5: case 4: case 3: case 2: case 1: case 0: printf(“grade=E\n”); break; default: printf(“The score is out of range!\n”); } } [程序演示] 程序运行情况如下： Input a score(0~100): 85↙ grade=B