学生成绩管理系统v3.0

1、./ 成绩管理系统 v3.0/能动 1302王清栋 1306030217#include <stdio.h>#include <stdlib.h>#include <string.h>#define N 30void Input (long num,int score,int n,char name10);void Totalave (int score,int n);void Scoredes (long num,int score,int n,char name10);void Scoreas (long num,int score,int n,char

2、 name10);void Numas (long num,int score,int n,char name10);void Nameorder(long num,int score,int n,char name10) ;void Searchbyno (long num,int score,int n,int x,char name10);void Searchbyname(long num,int score,int n,char c,char name10);void statistis (int score,int n);void List (long num,int score,

3、int n,char name10);int main()int n,scoreN,c,x;long numN;char nameN10;char y10;专业资料.printf("输入学生人数 ");scanf("%d",&n);/ getchar();printf("1.Input recordn");printf("2.Caculate totel and average score of every coursen");printf("3.Sort in descending order

4、by scoren");printf("4.Sort in ascending order by score n");printf("5.Sort in ascending order by numbern");printf("6.Sort in dictionary order by namen");printf("7.Search by numbern");printf("8.search by namen");printf("9.Statistic analysisn&

5、quot;);printf("10.List recordn");printf("0.Exitn");printf("Please enter your choice:n");printf("n");for(;)scanf("%d",&c);switch(c)case 1:/ 录入学生学号和各科成绩专业资料.Input (num,score,n,name);printf("Please enter your choice:n");break;case 2:/ 计算每门

6、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

7、 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");专业资料.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",&x);Searchbyno (num

8、,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 cho

9、ice:n");break;case 10:/ 全部输出List (num,score,n,name);printf("Please enter your choice:n");break;专业资料.case 0:exit(0);return 0;void Input (long num,int score,int n,char name10)/1int i;for(i=0;i<n;i+)printf("Input student's ID ,name and score");scanf("%ld",&

10、numi);scanf("%s",namei);scanf("%d",&scorei);/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;专业资料.for(i=0;i<n;i+)sum=sum+scorei;ave=(double)sum/n;printf("总分 =%d, 课程的平均分 =%fn",sum,ave);void Scoredes (long num,int score,int n,char nam

11、e10)/3. 按学生的分由高到低排出名次表int i,j,k,t,h;char temp10;for(i=0;i<n;i+)k=i;for( j=i+1;j<n;j+)if (scorej>scorek)k=j;if(i!=k)专业资料.t=scorek,h=numk,strcpy(temp,namek);scorek=scorei,numk=numi,strcpy(namek,namei);scorei=t,numi=h,strcpy(namei,temp);for(i=0;i<n;i+)printf("ID:%10ld,name:%s,score:%dn

12、",numi,namei,scorei);/以长整形打印用 %ldvoid Scoreas (long num,int score,int n,char name10)/4. 按学生的分由高到低排出名次表int i,k,t,h,j;char temp10;for(i=0;i<n;i+)k=i;for( j=i+1;j<n;j+)if (scorej<scorek)k=j;专业资料.if(i!=k)t=scorek,h=numk,strcpy(temp,namek);scorek=scorei,numk=numi,strcpy(namek,namei);scorei=

13、t,numi=h,strcpy(namei,temp);for(i=0;i<n;i+)printf("ID:%10ld,name:%s,score:%dn",numi,namei,scorei);/以长整形打印用 %ldvoid Numas (long num,int score,int n,char name10)/5. 按学号由小到大排出名次表int i,k,h,t,j;char temp10;for(i=0;i<n;i+)k=i;for( j=i+1;j<n;j+)if (numj<numk)专业资料.k=j;if(i!=k)t=scorek,

14、h=numk,strcpy(temp,namek);scorek=scorei,numk=numi,strcpy(namek,namei);scorei=t,numi=h,strcpy(namei,temp);for(i=0;i<n;i+)printf("ID:%10ld,name:%s,score:%dn",numi,namei,scorei);/以长整形打印用 %ldvoid Nameorder(long num,int score,int n,char name10)/6 。按姓名的字典顺序排出成绩表int i,k,t,h;char temp10;for(i=0

15、;i<n;i+)专业资料.for(k=i+1;k<n;k+)if(strcmp(namei,namek)>0)t=scorek,h=numk,strcpy(temp,namek);scorek=scorei,numk=numi,strcpy(namek,namei);scorei=t,numi=h,strcpy(namei,temp);for(i=0;i<n;i+)printf("ID:%10ld,name:%s,score:%dn",numi,namei,scorei);/以长整形打印用 %ldvoid Searchbyno (long num,i

16、nt score,int n,int x,char name10)/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 temp10;for(i=0;i<n;i+)专业资料.k=i;for( j=i+1;j<n;j+)if (numj<numk)k=j;if(i!=k)t=scorek,h=numk,strcpy(temp,namek);scorek=scorei,numk=numi,strcpy(namek,namei);scorei=t,numi=h,strcpy(namei,temp

17、);while(find=0&&low<=high)mid=(high+low)/2;if(x>nummid)low=mid+1;else if(x<nummid)high=mid-1;else专业资料.pos=mid;find=1;if(find=0)printf("not findn");elsefor(i=0;i<n;i+)if(scorei>scorepos)c+;printf("ID:%10ld,name:%s,order:%d,",numpos,namepos,c);/以长整形打印用%ldprin

18、tf("score:%dn",scorepos);void Searchbyname(long num,int score,int n,char c,char name10)/8。按姓名查询学生排名及其考试成绩专业资料.int i,pos=-1,d=1;for(i=0;i<n;i+)if(strcmp(namei,c)=0)pos=i;if(pos=-1)printf("not findn");elsefor(i=0;i<n;i+)if(scorei>scorepos)d+;printf("ID:%10ld,name:%s,order:%d,",numpos,namepos,d);/以长整形打印用%ldprintf("score:%dn",scorepos);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;专业资料.double A,B,C,D,E;for(i=0;i<n;i+)if(scorei>=90)a+;else if(scorei>=80)b+;else if(scorei>=