error C2001: newline in constant 这个错误怎么解决啊，谢谢啦

Question

#include <stdio.h> int main () {float score ; char grade ; printf("请输入学生成绩:"); scanf("%f,&score); );while(score>100||score<0) {printf("\n输入有误，请重输"); scanf("%f,&score); );} switch ((int)(score/10)) {case 10: case 9:grade='A';break; case 8:grade='B';break; case 7:grade='C';break; case 6:grade='D';break; case 5: case 4: case 3: case 2: case 1: case 0:grade

Answer 1

{printf("\n输入有误，请重输"); scanf("%f,&score); );}
多了个 ); 删除掉它