学生成绩管理系统v3.0

成绩管理系统 v3 0 能动 1302 王清栋 1306030217 include include include define N 30 void Input long num int score int n char name 10 void Totalave int score int n void Scoredes long num int score int n char name 10 void Scoreas long num int score int n char name 10 void Numas long num int score int n char name 10 void Nameorder long num int score int n char name 10 void Searchbyno long num int score int n int x char name 10 void Searchbyname long num int score int n char c char name 10 void statistis int score int n void List long num int score int n char name 10 int main int n score N c x long num N char name N 10 char y 10 printf 输入学生人数 scanf d getchar printf 1 Input record n printf 2 Caculate totel and average score of every course n printf 3 Sort in descending order by score n printf 4 Sort in ascending order by score n printf 5 Sort in ascending order by number n printf 6 Sort in dictionary order by name n printf 7 Search by number n printf 8 search by name n printf 9 Statistic analysis n printf 10 List record n printf 0 Exit n printf Please enter your choice n printf n for scanf d switch c case 1 录入学生学号和各科成绩 Input num score n name printf Please enter your choice n break case 2 计算每门课程的总分和平均分 Totalave score n printf Please enter your choice n break case 3 按 chengji 由高到低排出名次表 Scoredes num score n name printf Please enter your choice n break case 4 按 chengji 由低到高排出名次表 Scoreas num score n name printf Please enter your choice n break case 5 按学号由小到大排出名次表 Numas num score n name printf Please enter your choice n break case 6 按学号由小到大排出名次表 Nameorder num score n name printf Please enter your choice n break case 7 按学号查询学生排名及其各科成绩 printf 请输入查找学号 n scanf d Searchbyno num score n x name printf Please enter your choice n break case 8 按姓名查询学生排名及其各科成绩 printf 请输入查找姓名 n getchar gets y Searchbyname num score n y name break printf Please enter your choice n case 9 成绩分析 所占百分比 statistis score n printf Please enter your choice n break case 10 全部输出 List num score n name printf Please enter your choice n break case 0 exit 0 return 0 void Input long num int score int n char name 10 1 int i for i 0 i n i printf Input student s ID name and score scanf ld scanf s name i scanf d getchar void Totalave int score int n 2 计算课程的总分和平均分 int i sum 0 double ave for i 0 i n i sum sum score i ave double sum n printf 总分 d 课程的平均分 f n sum ave void Scoredes long num int score int n char name 10 3 按学生的分由高到 低排出名次表 int i j k t h char temp 10 for i 0 i n i k i for j i 1 jscore k k j if i k t score k h num k strcpy temp name k score k score i num k num i strcpy name k name i score i t num i h strcpy name i temp for i 0 i n i printf ID 10ld name s score d n num i name i score i 以长整形打印用 ld void Scoreas long num int score int n char name 10 4 按学生的分由高到低 排出名次表 int i k t h j char temp 10 for i 0 i n i k i for j i 1 j n j if score j score k k j if i k t score k h num k strcpy temp name k score k score i num k num i strcpy name k name i score i t num i h strcpy name i temp for i 0 i n i printf ID 10ld name s score d n num i name i score i 以长整形打印用 ld void Numas long num int score int n char name 10 5 按学号由小到大排出名次表 int i k h t j char temp 10 for i 0 i n i k i for j i 1 j n j if num j num k k j if i k t score k h num k strcpy temp name k score k score i num k num i strcpy name k name i score i t num i h strcpy name i temp for i 0 i n i printf ID 10ld name s score d n num i name i score i 以长整形打印用 ld void Nameorder long num int score int n char name 10 6 按姓名的字典顺序排出 成绩表 int i k t h char temp 10 for i 0 i n i for k i 1 k0 t score k h num k strcpy temp name k score k score i num k num i strcpy name k name i score i t num i h strcpy name i temp for i 0 i n i printf ID 10ld name s score d n num i name i score i 以长整形打印用 ld void Searchbyno long num int score int n int x char name 10 7 按学号查询学生排名 及考试成绩 int high n 1 low 0 mid c 1 pos find 0 i k h j t char temp 10 for i 0 i n i k i for j i 1 j n j if num j num k k j if i k t score k h num k strcpy temp name k score k score i num k num i strcpy name k name i score i t num i h strcpy name i temp while find 0 else if x num mid high mid 1 else pos mid find 1 if find 0 printf not find n else for i 0 iscore pos c printf ID 10ld name s order d num pos name pos c 以长整形打印用 ld printf score d n score pos void Searchbyname long num int score int n char c char name 10 8 按姓名查询学生 排名及其考试成绩 int i pos 1 d 1 for i 0 i n i if strcmp name i c 0 pos i if pos 1 printf not find n else for i 0 iscore pos d printf ID 10ld name s order d num pos name pos d 以长整形打印用 ld printf score d n score pos void statistis int score int n 9 案优秀良好中等及格不及格 5 个类别 统计每个类别的 人数以及所占的百分比 int a 0 b 0 c 0 d 0 e 0 i double A B C D E for i 0 i 90 a else if score i 80 b else if score i 70 c else if score i 60 d else e A double a n 100 B double b n 100 C double c n 100 D double d n 100 E double e n 100 printf 优秀人数 d 百分比 f n a A printf 良好人数 d 百分比 f n b B printf 中等人数 d 百分比 f n c C printf 及格人数 d 百分比 f n d D printf 不及格人数 d