src.c:1:1: error: stray '\302' in program
 #include<stdio.h>
^
src.c:1:1: error: stray '\240' in program
src.c:1:3: error: stray '#' in program
 #include<stdio.h>
^
src.c:1:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
 #include<stdio.h>
^
src.c:2:1: error: stray '\302' in program
int main()
^
src.c:2:1: error: stray '\240' in program
src.c:4:1: error: stray '\302' in program
int score;
^
src.c:4:1: error: stray '\240' in program
src.c:7:1: error: stray '\302' in program
if (score<0 || score>100)
^
src.c:7:1: error: stray '\240' in program
src.c:7:1: error: stray '\302' in program
src.c:7:1: error: stray '\240' in program
src.c:7:1: error: stray '\302' in program
src.c:7:1: error: stray '\240' in program
src.c:15:1: error: stray '\302' in program
case 0:
^
src.c:15:1: error: stray '\240' in program
src.c:16:1: error: stray '\302' in program
case 1:
^
src.c:16:1: error: stray '\240' in program
src.c:17:1: error: stray '\302' in program
case 2:
^
src.c:17:1: error: stray '\240' in program
src.c:18:1: error: stray '\302' in program
case 3:
^
src.c:18:1: error: stray '\240' in program
src.c:19:1: error: stray '\302' in program
case 4:
^
src.c:19:1: error: stray '\240' in program
src.c:20:1: error: stray '\302' in program
case 5:printf("该同学的等级为:E\n");break;
^
src.c:20:1: error: stray '\240' in program
src.c:21:1: error: stray '\302' in program
case 6:printf("该同学的等级为:D\n");break;
^
src.c:21:1: error: stray '\240' in program
src.c:22:1: error: stray '\302' in program
case 7:printf("该同学的等级为:C\n");break;
^
src.c:22:1: error: stray '\240' in program
src.c:23:1: error: stray '\302' in program
case 8:printf("该同学的等级为:B\n");break;
^
src.c:23:1: error: stray '\240' in program
src.c:24:1: error: stray '\302' in program
case 9:
^
src.c:24:1: error: stray '\240' in program
src.c:25:1: error: stray '\302' in program
case 10:printf("该同学的等级为:A\n");break;
^
src.c:25:1: error: stray '\240' in program
src.c:28:1: error: stray '\302' in program
return  0;
^
src.c:28:1: error: stray '\240' in program
src.c:28:1: error: stray '\302' in program
src.c:28:1: error: stray '\240' in program