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1、精品文档成绩管理系统vl.O#include <stdio.h>#include <stdlib.h>#include <string.h>#define N 30#define M 6typedef struct stude ntlong stude ntID;char studentName10;int scoreM;STU;void Input (STU stu,int n,int m);void Totalave (STU stu,int nzint m);void evestuTotalave (STU stu,int n,int m);void
2、Scoredes (STU stuJnt n,int m);void Scoreas (STU stu,int n,int m);void Numas (STU stuJnt n,int m);void Dicas (STU stu,int njnt m);void Searchbynum (STU stu,int njnt x,int m);void Searchbymane(STU stuzint n,char nameJnt m);void statistis (STU stu,int njnt m);void List (STU stuJnt njnt m);int main()int
3、 mm;char name10;STU stuN;printf(“输入学生人数“)；scanf(,%d,/&n);printfC1输入考试科目“)；scanf(,%d,/&m);printf(nl.Input recordnM)；prin tf("2.Caculate tote I and average score of every coursen")；prin tf("3.Caculate tote I and average score of every stude ntn“)；printf("4.Sort in descendin
4、g order by total score of every studentnH)；printf("5.Sort in ascending order by total score of every studentn”)；printf("6.Sort in ascending order by numbernn);printf(n7.Sort in ascending order by name'1);printf(n8.Search by numbernH)；printf(n9.Search by namenJ;printf("10.Statistic
5、 analysis for every coursenM)；printf("ll.List recordnn);printfC'O.ExitXn")；printf(nPlease enter your choice:nH);printf("n")；for(;)scanf(,%d,&c);switch(c)case 1:录入学生学号和各科成绩Input (stu,nzm);printf(HPlease enter your choice:n");break;case 2:计算每门课程的总分和平均分Totalave (stu,n,m
6、);printf(HPlease enter your choice:n");break;case 3:计算每个学生的总分和平均分evestuTotalave (stu,nzm);break;case 4:按每个学生的总分由高到低排出名次表Scoredes (stu,n,m);printf(HPlease enter your choice:n");break;case 5:按每个学生的总分由低到高排出名次表Scoreas (stunm);printf(HPlease enter your choice:n");break;case 6:按学号由小到人排出名次表N
7、umas (stu,n,m);printf(HPlease enter your choice:n");break;case 7:按姓名的字典顺序排出成绩表Dicas(stunm);printf(HPlease enter your choice:nJ;break;case &按学号查询学生排名及其各科成绩printf(”请输入查找学号n”);scanfC%d'：&x);Searchb yn um(stu, nxm);printf(HPlease enter your choice:n");break;case 9:按姓名査询学生排名及其各科成绩pr
8、intf(“请输入査找姓名n“);scanf(”s；name);getchar();Searchbyma ne(stu，n，nprintf(HPlease enter your choice:n“);break;case 10:成绩分析所占百分比statistis (stu,nzm);printf(MPlease enter your choice:n”);break;case 11:全部输出List (stugm);Totalave (stu,n,m);printf(HPlease enter your choice:n“);break;精品文档case 0:exit(0);return 0
9、;void Input (STU stu,int n,int m) /Iint i,j;for(i=0;i <n ;i+)printf(Hlnput student's ID ,name and score1')；scanf(,%ld,&stui.studentlD);scanf(,%s,/stui.studentName);for(j=0;j<m;j+)scanf(,l%d",&stui.scorej);void Total a ve (STU stu,int njnt m)2.计算每门课程的总分和平均分int ijzsumM;doubl
10、e aveM;for(j=0;j<m;j+)sumj=0;for(i=0;i<n;i+)sumj=sumj+stui.scorej;avej=(double)sumj/n;for(i=0;i<m;i+)printf("科目4 的总分=%d,课程的平均分=%fn"/i+l/sumizavei);void evestuTotalave (STU stu,int n,int m)3计算每个学生的总分和平均分int ijzsumN;double aveN;for(i=0;i<n;i+)sumi=0;for(j=0;j<m;j+)sumi=sumi+st
11、ui.scorej;avei=(double)sumi/m;for(i=0;i<n;i+)printff学号为ld,姓名为s 的总分=%d,其平均分=%fn"/stui.studentlD/stui.studentName/sumi/avei);void Scoredes (STU stu,int n,int m)/用.按每个学生的总分由高到低排出名次表int i jkhsumN;STU t;for(i=0;i<n;i+)sumi=0;for(j=0;j<m;j+)sumi=sumi+stui.scorej;for(i=0;i<n;i+)k=i;for(j=i
12、+l;j<n;j+)if (sumj>sumk)k=j;if(i!=k)t二stui，h 二sumi;stui=stuk,sumi=sumk;stuk=t/sumk=h;for(i=0;i<n;i+)printf(,ID:%10ld/name:%s/score:%dn"/stui.studentlD/stui.studentName/sumi); 以长整形打印用ldvoid Scoreas (STU stu,int njnt m)5.按每个学生的总分由di到gao排出名次表int i jkhsumN;STU t;for(i=0;i<n;i+)sumi=0;fo
13、r(j=0;j<m;j+)sumi=sumi+stui.scorej;for(i=0;i<n;i+)k=i;for(j=i+l;j<n;j+)讦(sumj<sumk)k 二 j;if(i!=k)t二stui,h 二 sumi;stui=stukzsumi=sumk;stuk=t/sumk=h;for(i=0;i<n;i+)printf(,ID:%10ld/name:%s/score:%dn,/stui.studentlD/stui.studentName/sumi); 以长整形打印用ldvoid Numas (STU stuJnt n,int m)/&按学
14、号由小到人排出名次表int i,j,k;STU t;for(i=0;i<n;i+)k=i;for(j=i+l;j<n;j+)if (stuj.studentlD<stuk.studentlD)k 二 j;if(i!=k)t=stuk/stuk=stui/stui=t;for(i=0;i<n;i+)printf(,ID:%10ld/name:%sn,stui.studentlD/stui.studentName);/ 以长整形打印 for(j=0;j<m;j+)printf(nproject %d score:%dn,/j+l/stui.scorej);void D
15、icas (STU stu,int njnt m)7int ij；STU t;for(i=0;i<n;i+)for(j=i+l;j <n ;j+)if(strcmp(stui.studentName,stuj.stude ntName)>0)t=stui/stui=stuj/stuj=t;for(i=0;i<n;i+)printf(,ID:%10ld/name:%sn,/stui.studentlD/stui.studentName);for(j=0;j<m;j+)printf(,project:%d/score:%dn,/j+l/stui.scorej);voi
16、d Searchbynum (STU stu,int njnt x,int m)/8.按学号查询学生排名及其各科成绩int i/j/c=l,find=O/sumN;for(i=0;i<n;i+)sumi=0;for(j=0;j<m;j+)sumi=sumi+stui.scorej;for(i=0;i<n;i+)if(stui.studentlD=x)find=l;break;if(find=O)printff'not findnH)；elsefor(j=0;j<n;j+)printf(MID:%10ld name:%sn"，stuistudentlD,
17、stui.studentName);以长整形打印用ld for(j=0;j<m;j+)printf(nproject %d score:%dn,/j+l/stui.scorej);printff'all score: %d,order:%dn,/sumi/c);void Searchbymane(STU stuzint n,char nameJnt m)/9int i/j,c=l/find=O/sumN;for(i=0;i<n;i+)sumi=0;for(j=0;j<m;j+)sumi=sumi+stui.scorej;for(i=0;i<n;i+)if(str
18、cmp(stui.studentName, name)=O)find=l;break;if(find=O)printf("not findn")；elsefor(j=0;j<n;j+)if(sumj>sumi)C+；printf(,ID:%10ld/name:%sn',/stui.studentlD,stui.studentName); 以长整形打印用 ld for(j=0;j<m;j+)printf(nproject %d score:%dn,/j+l/stui.scorej);printf("all score: %d,order:%
19、dn,/sumi/c);void statistis (STU stu,int njnt m) /10.int a=O,b=O,c=O/d=O,e=O,i/j;double A,B,C,D,E;for(j=0;j<m;j+)for(i=0;i <n ;i+)精品文档if (stui).score j>=90)a+;else if(stui.scorej>=80)b+;else if(stui.scoreU>=70)C+；else if(stui.scorej>=60)d+;elsee+;A=(double)a/n*100;B=(double)b/n*100;
20、C=(double)c/n*100;D=(double)d/n*100;E=(double)e/n*100;printf(Mproject %dn"J+l);printf("优秀人数 d,百分比:%f%n",a,A); printf(H良好人数小百分比:%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«百分比:f%n",e,E);void List (STU stuzint nzint m)/ll.精品文档精品文档int i jsumN; double aveN; for(i=0;i<n;i+)sumi=0;for(j=0;j<m;j+)sumi=sumi+stui.scorej;avei=(double)sumi/m;for(i=0;i<n;i+)printf(,ID:%10ld,name:%sn,/stui.studentlD/stui.studentName);for(j=0;j<m;j+)printf("score:%dn,/stui.scorej);printf(H总分=%dn 平均分%fn,sumi,avei);精品文档