源代码：

1 #include 
     
        2 #include 
      
         3 #include 
       
          4   5 #define   Score_Num  35  6   7 struct Standard  8 {  9     int A; 10     int B; 11     int C; 12     int D; 13     char Correct_Answer; 14 }; 15  16 struct Standard Standard_Answer[Score_Num];//记录标准答案 17  18 struct Stu 19 { 20     int Num;//学生学号 21     char Name[32];//学生姓名 22     char Answer[Score_Num];//准确答案 23     int Score;//学生分数 24 }; 25  26 struct Stu Student[100];//存储学生信息 27 int Stu_Num = 0;//存储学生数目 28  29 //---------------------------------统计标准答案------------------------ 30 void Standard_Num() 31 { 32     int i, j; 33     int tag; 34     for(i=0;i
        
          tag) 52         { 53             tag = Standard_Answer[j].B; 54             Standard_Answer[j].Correct_Answer = 'B'; 55         } 56         if(Standard_Answer[j].C > tag) 57         { 58             tag = Standard_Answer[j].C; 59             Standard_Answer[j].Correct_Answer = 'C'; 60         }if(Standard_Answer[j].D > tag) 61         { 62             tag = Standard_Answer[j].D; 63             Standard_Answer[j].Correct_Answer = 'D'; 64         } 65     } 66 } 67 //---------------------------------统计标准答案------------------------ 68  69  70  71 //------------------实现每次从文本文件中读取一行----------------------- 72 char* Read_line(FILE* f, char* line) 73 { 74      75     return line; 76 } 77 //------------------实现每次从文本文件中读取一行----------------------- 78  79 //------------------打印标准答案--------------------------------------- 80 void Standard_Print() 81 { 82     int i; 83     for(i=0; i
         
          =0; i--)199         {200             printf("%d %s的成绩是%d\n", Student[i].Num, Student[i].Name, Student[i].Score);201         }202     }203     else204     {205         printf("按升序排列学生成绩:\n");206         for(i=0; i
          
            high)227 high = Student[i].Score;228 if(Student[i].Score < low)229 low = Student[i].Score;230 if(Student[i].Score >= 60)231 hege++;232 }233 avr = sum/Stu_Num;234 printf("最高分是:%d\n最低分是:%d\n平均分是:%f\n及格率是:%f\n", high, low, avr, hege*1.0/Stu_Num);235 }236 //----------------------------------试卷分析------------------------------237 238 239 int main()240 {241 int tag=1;242 Load_File();//从文件中读取学生信息243 Standard_Num();//统计标准答案244 Student_Score_Get();//计算每个学生的分数245 while(tag != 0)246 {247 tag = 0;248 printf("**************************************************************\n");249 printf("1.打印标准答案\n");250 printf("2.根据学生姓名查询学生信息\n");251 printf("3.按升序打印学生成绩\n");252 printf("4.按降序打印学生成绩\n");253 printf("5.打印统计信息\n");254 printf("0.退出系统\n");255 printf("请输入你要操作的序号:\n");256 printf("**************************************************************\n");257 scanf("%d", &tag);258 switch(tag)259 {260 case 1:Standard_Print();break;261 case 2:Student_Score_Look();break;262 case 3:Student_All_Score_Sort(0);break;263 case 4:Student_All_Score_Sort(1);break;264 case 5:Paper_Analyse();break;265 case 0:return 0;266 default:printf("输入错误!请从新输入:\n");267 }268 }269 return 0;270 }
          
         
        
       
      
     

测试文件：

1 1   赵光       CADADCDCDACCCDACCBCAAACCDBBCBDDBBAD 2 2   罗志       CADBDCBCDADCABACBCCACACCAABCBDDBCAB 3 3   闫谷凡     CDCBDCCCDBDBBBCCBBCACACBAABCBDDBCAB 4 4   黄智博     CDCBDCCCDBDDABACBDCACACAAABCBDDBCCA 5 5   汪昇朗     CACBDCBCDBDCBBACBDCACCCAAABCBDDBCAB 6 6   刘奋伦     CDDBDCDCDBDAABBDDBCBCACAAABCBDDBCAB 7 7   李磊鹏     CADBDABCDBDCABCCBDBACCCAABBCBDDBCAB 8 8   高卫       DADBDDBCDBDCBCCCBDCBCACBAABCBDDADAA 9 9   周鸿韵     CADBDCCBCADCBCDCABCCCACADBBCDCDBDAA10 10  杨建       CBDBDBBCDBDBBCCABDBACACBABBCBDAADAB11 11  李海凯     CADBDCACDBDCBDADDADABAACBBBCBDDBCAB12 12  李冲谱     CADBDCCCDBDCBBACBBCACACAABBCBDDBCAB13 13  邰杨敏     CACCDCBCDBDCBCCCBDCDCACABBBCBDDBCAB14 14  姚畅生     CBDBDCDDDBDCDCCBBDCDCCCADABCBDDACAA15 15  禤微       CADBDABCDCDCBBCBBDBACCAAABBCBDDBCAB16 16  丁宁       CADADCBCDBDCBDDCDCCABACABABCBDDBCDD17 17  乔梦进     CADDDABCDBDCBBCABDBACACBDBBCBDDBCAB18 18  张华       CADBDCBCDBDCBBCACDCACACAABBCBDDBCAB19 19  代怡康     CADBDABBDBDCBCDABDCBCCCAAABCBDDBCAB20 20  张文剑     CABDACCCDBDCBCCCBCDBCCABBDBBCCDBCCD21 21  吴汉       AADBACCCDBDABBCCBDCACACABABCBDDBCAB22 22  刘亚       CADBBABCDADBBCCADBBACACADABCBDDBCAB23 23  吴璐       CADBDBCCDBDCBBCCBCBACACAABBCBDDBCAB24 24  唐金       CACBDBACDBDBBCADDCCAAACBCABCBDDBCAB25 25  刘秋       CADCDABCDADCBCDADDBCCAAABBBCBDDBCAB26 26  徐文       CADBDDBCDBDCBBAABDBACCCADBBCBDDACAB27 27  孙育夫     CABDDCBCDBDCBBDCBDCAACCCDBBCBDDBCCA28 28  毛东       CDABDDBCDBDCBCCADDCACCCAABBCBDDBCAB29 29  陈环勇     CADBDABCDBDCBBACCABACCCAABBCBDDBCCB30 30  郑彪爽     CBDBCCDBBAACBADBCBDDAACCDBBCCDDBCAB31 31  赵志龙     CADBDDBCDBDABBDABDBACCCBAABCBDDBCAB32 32  梁傲朝     CADBDABCDBDBBBDCDDCACAAADBBCBDDBCAA33 33  许同雷     CADBDABCDBDABBBCBDCDCACAABBCBDDBCAB34 34  徐彦楠     CADBDCBCDBDCBBACDDCACCAABABCBDDBCAB35 35  罗建磊     CADBDCCCDBDCBCDADBCAACACBBBCBDDBBAD36 36  曾少林     CBDBDCBCBADDCCADDABACAABCBBCADDBAAB37 37  郭磊杰     CADBDBBCDACCABDCDDBBCAADBBBCBDDBCAD38 38  閤道炜     CADBDCBCDBDBADBCABDCCACABBBCBDDADCD39 39  胡风波     DADBDDBCDBDCBBCCBDBAACCABBBCBDDACAB40 40  张兆       CDDBDADCDBDCBCCDDDBACAACDBBCBDDBDAB41 41  吴雪       BDDBDCBCDBDCBDDCBDCACAAAABBCBDDBCCA42 42  卫曦群     CADBDDACDBDCBBCCDCCACCCAABBCBDDBCCA43 43  郭文雪     CBDBDDBCDBDBCCCCBBCACAAAABBCBBDBCCB44 44  黄甘亮     CBDBDCBCDBDBADBCDDCCAACADABCDDDBCBA45 45  苏子淇     CADBDCBCDBCCBCACADBACACDAABCBCDACCA46 46  王樊聪     CBDBDCBCDBDCABABBDCACCCAAABCBDDACAB47 47  肖勇杰     CADBDCBCDBDCBBCCBDCACCCAABBCBDDBCAB48 48  石小       CCDBDDCCDBDBBBCCCBCAAAADCBBCBDDBCAB49 49  刘大远     CADBDCCCDBDBADCCADCCCAAAAABCADDCCCA50 50  陈世怡     CADBDCCCDBDABCCCDDCAAAACAABCADDACCA51 51  王鹏康     CADBDCDCDCCACCDDBDCABAAACBBCBDDBCAB52 52  解欣琦     BBDBADCDDBACADBACBDDAADABABCACDBCAA53 53  刘周雯     CADBDCCCDBDCBCACBACACCCADABCBDDACAB54 54  代博涛     CADBDBBCDBDBBCDCDABDCCABBABCBDDACAB55 55  刘亚明     CADBDCDCDBDABBAABABACACAABBCBDDBCAB56 56  韩建昊     CADBDBBCDBDCBBCBBDBACCCAABBCBDDBCAB57 57  于磊思琪   CBDCDCCCDBDBBDCAACDACAAADBBBBDABCCA58 58  王治       DADBDBBCDBDCBBCABDBCCCCAABBCBDDBCAD59 59  刘春东     CADBDCBCDBDBBBCCADDACAAAAABCBDDBCAB60 60  魏恒宇     CACBDCBCDBDCBBDCBDBACACBABBCBCDBCAB61 61  陈春迪     CADBDCBCDBDCBBCCBBBACAABBBBCBDDBCCD62 62  贾汝远     CADBDBBCDBDBCADABDCBAACCBABCACDBCAB63 63  韩全彤     CADBDCBCDBDCBBCCBDBACACAABBCBDDCCAB64 64  付彬祺     CADBDCBCDADABBDCDDBACACBABBCBDDBCBB65 65  王泽文     CADBBCBCDBDACDBBBBCDBAADBBBCBCDACAB66 66  胡富南     CADBDCDCDACCBDCCCABACCCDBBBCBDDBCAB67 67  肖秋来     CADDDCBCDBCCBCACDCBABACCAABBBDDACCA68 68  周晓       CADBDABCDADCBCCDBDBACCCAABBCBDDBCAB69 69  王奕敏     CADBDCBCDBDCBBCABDBACCCAABBCBDDBCAB70 70  徐钰英     DADBDABCDBDCABCCBDBBCCCABBBCBDCBCAB71 71  陈赢       CDDBAABCBADABCCCDBCACACDAABCBDDBCAB72 72  杨君       CADBDDACCBDCBDDCBCCCCCCCCBBCBDDBCAB73 73  李清雪     DADBDCBCDBDCABDCBDCACCCAABBCBDDBCAB74 74  周俊蒙     CADBCDBCCCDCBDBCBCCACACBBBBCBDDACAB75 75  李梦       CACBDCBCDBDCBAACBDCACACCBABCBDDBCAB76 76  夏焕宏     CBDBDCCCDADABBDCBCCAACAADBBBBDDBCDD77 77  徐鑫强     CADBDCBCDBDAAADCBBCABACAABBCBDDBCAB78 78  娄克瑞     CACBDBBCCBDCBBDABACACAAAAABCBDABCAB79 79  董泽光     CDDCDABCDBDDBCDDDCBACACBBABCBDDBBCD80 80  黄念龙     CACBDABCDBDABBCCBDCACCCAABBCBDDBCAB81 81  林世       CADBDCBCDBDABAACBDBACCCAABBCBDDBCAB82 82  王雪       CADBDCBCDBDCBBCABDBACACAABBCBDDBCAB83 83  何璐       CADCDBBCDBDCCBACBDBCCACAABBCBDDBCAB84 84  吴一       CBDBDCACBBDCBCACBDCCCACADBBCBDDBCAB85 85  龚文杰     CADBDCBCDBDCBBCBBDCACCCBAABCBDDBCAB86 86  王志媛     DAABDCACDBDCCCCCBDCAAACCCABCACDBCCA87 87  段靖章     CADBDCBCDCDCBBDABDBACAACABBCBCDBCAB88 88  胡大       CADBDCCCDBDBBDDCBDDCCACAAABBBCDBCBB89 89  黄利伟     CADBDCBCDBDCABDCCDBACACCADBCBDDBCAB90 90  张文源     CADBDCBCDBDCBBDABDBACCCAABBCBDDBCAB91 91  林涛       CADBDBBCDBDCBBCABDBACCCAABBCBDDBCAB