下列程序功能是成绩等级评定,成绩为0-100的值。其中,90分及以上评定为A,...

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下列程序功能是成绩等级评定,成绩为0-100的值。其中,90分及以上评定为A,80分及以上评定为B,70分及以上评定为C,60分及以上评定为D,其他评定为E。将以下程序填写完整。 #include main() { float score; int x; printf("please input your score:\n"); scanf("%f",&score); ( 1 ) ; /* 将成绩转换为常量表达式 */ ( 2 ) /* 进入多分支判断 */ { ( 3 ) : case 9 :printf("your grade isA\n");( 4 ); case 8 :printf("your grade isB\n");break; case7 :printf("your grade is C\n");break; case 6 :printf("your grade isD\n");break; ( 5 ) :printf("your grade is E\n");break; } getch(); }

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