学生成绩管理系统v

1、/ / 成 绩 管 理 系 统 v 3 . 0 / 能动 1302 王清栋 1306030217#include #include #include #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 name10);void Numas (long num,int s

2、core,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,int n,char name10);int main()int n,

3、scoreN,c,x;long numN;char nameN10;char y10;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 by scoren);printf(4.Sort in ascending order by score n);printf(5.Sort in ascending order by numbe

4、rn);printf(6.Sort in dictionary order by namen);printf(7.Search by numbern);printf(8.search by namen);printf(9.Statistic analysisn);printf(10.List recordn);printf(0.Exitn);printf(Please enter your choice:n);printf(n);for(;)scanf(%d,&c);switch(c)case 1: /Input (num,score,n,name); printf(Please enter

5、your choice:n); break;case 2: /Totalave (score,n); printf(Please enter your choice:n); break;case 3: /Scoredes (num,score,n,name); printf(Please enter your choice:n); break;case 4: /Scoreas (num,score,n,name); printf(Please enter your choice:n); break;录入学生学号和各科成绩计算每门课程的总分和平均分按 chengji 由高到低排出名次表按 che

6、ngji 由低到高排出名次表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,&x);Searchbyno (num,score,n,x,name); printf(Pleas

7、e 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

8、(Please enter your choice:n);break; case 0:exit(0);return 0;void Input (long num,int score,int n,char name10) /1int i;for(i=0;in;i+)printf(Input students ID ,name and score);scanf(%ld,&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;doubl

9、e ave;for(i=0;in;i+) sum=sum+scorei;ave=(double)sum/n;prin tf(总分=%d 课程的平均分=%fn,sum,ave);按学生void Scoredes (long num,int score,int n,char name10)/3.的分由高到低排出名次表int i,j,k,t,h;char temp10;for(i=0;in;i+)k=i;for(j=i+1;jscorek)k=j;if(i!=k)t=scorek,h=numk,strcpy(temp,namek); scorek=scorei,numk=numi,strcpy(na

10、mek,namei); scorei=t,numi=h,strcpy(namei,temp);for(i=0;in;i+)printf(ID:%10ld,name:%s,score:%dn,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;in;i+)k=i;for(j=i+1;jn;j+)if (scorejscorek)k=j;if(i!=k) t=scorek,h=

11、numk,strcpy(temp,namek); scorek=scorei,numk=numi,strcpy(namek,namei); scorei=t,numi=h,strcpy(namei,temp);for(i=0;in;i+)printf(ID:%10ld,name:%s,score:%dn,numi,namei,scorei);/ 以 长 整 形打印用 %ld按学号由小到大void Numas (long num,int score,int n,char name10) /5. 排出名次表int i,k,h,t,j;char temp10;for(i=0;in;i+)k=i;fo

12、r(j=i+1;jn;j+)if (numjnumk)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);for(i=0;in;i+)printf(ID:%10ld,name:%s,score:%dn,numi,namei,scorei);/ 形打印用 %ldvoid Nameorder(long num,int score,int n,char name10) /6 顺序排出成绩表int i

13、,k,t,h;char temp10;for(i=0;in;i+)for(k=i+1;k0)t=scorek,h=numk,strcpy(temp,namek); scorek=scorei,numk=numi,strcpy(namek,namei); scorei=t,numi=h,strcpy(namei,temp);for(i=0;in;i+)printf(ID:%10ld,name:%s,score:%dn,numi,namei,scorei);/ 形打印用 %ldvoid Searchbyno (long num,int score,int n,int x,char name10)

14、/7. 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;以长整。按姓名的字典以长整按学char temp10;for(i=0;in;i+)k=i;for(j=i+1;jn;j+)if (numjnumk)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);while(find=0&lownummid)low=mid+1;

15、else if(xnummid)high=mid-1;elsepos=mid;find=1;if(find=0)printf(not findn);elsefor(i=0;iscorepos)c+;printf(ID:%10ld,name:%s,order:%d,numpos,namepos,c);/ 以 长 整 形 打 印 用ldprintf(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int i,pos=-1,d=1;for(i=0;i

16、n;i+) if(strcmp(namei,c)=0) pos=i; if(pos=-1) printf(not findn);elsefor(i=0;iscorepos)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;double A,B,C,D,E;f

17、or(i=0;i=90)a+;else if(scorei=80)b+;else if(scorei=70)c+;else if(scorei=60)d+;elsee+;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