#include<stdio.h>//2-09break语句成绩判断 int main() { int a,grade; scanf("%d",&a); grade=a/10; switch(grade) { case 10: case 9: printf("A"); break; case 8: printf("B"); break; case 7: printf("C"); break; case 6: printf("D"); break; case 5: case 4: case 3: case 2: case 1: case 0: printf("E"); break; } return 0; }
离散量用switch语句比较好。
易错点:case后面是冒号。不要忘记语句结束的break。