漫游猫认证
#include<stdio.h>main(){ int a; Scanf(
"%d,&a); Switch(a/10) {Case 10:printf(
"A
");break;Case 9:printf(
"B
");break;Case 8:printf(
"C
");break;Case 7:printf(
"D
");break;Case 6:printf(
"E
");break;default:printf(
"F
"); }}