学生成绩管理系统

1、/成绩管理系统v3.0 / 能动1302 王清栋 #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 score,int n,char name10)

2、;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,scoreN,c,x; long numN;

3、 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 numbern); printf(6

4、.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: /录入学生学号和各科成绩 Input (num,score,n,name); printf(Pl

5、ease 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 c

6、hoice: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,&x); Searchbyno (num,score,n,x,name); printf(

7、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);

8、 printf(Please enter your choice:n); break; case 0: exit(0); return 0; void Input (long num,int score,int n,char name10) /1 int 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

9、分 int i,sum=0; double ave; for(i=0;in;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 name10) /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;in;i+) k=i; for(j=i+1;jscorek) k=j; if(i!=k) t=scorek,h=numk,strcpy(temp,namek); sc

10、orek=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%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 (sco

11、rejscorek) 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);/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

12、; 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); for(i=0;in;i+) printf(ID:%10ld,name:%s,score:%dn,numi,namei,scorei);/以长整形打印用%ld void Nameorder(long num

13、,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;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);/以长整形打印用%ld v

14、oid Searchbyno (long num,int 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;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=

15、h,strcpy(namei,temp); while(find=0&lownummid) low=mid+1; else if(xnummid) high=mid-1; else pos=mid; find=1; if(find=0) printf(not findn); else for(i=0;iscorepos) c+; printf(ID:%10ld,name:%s,order:%d,numpos,namepos,c);/以长整形打印用%ld printf(score:%dn,scorepos); void Searchbyname(long num,int score,int n,

16、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;in;i+) if(strcmp(namei,c)=0) pos=i; if(pos=-1) printf(not findn); else for(i=0;iscorepos) d+; printf(ID:%10ld,name:%s,order:%d,numpos,namepos,d);/以长整形打印用%ld printf(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

17、，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(scorei=80) b+; else if(scorei=70) c+; else if(scorei=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