学生成绩管理系统v30.docx

1、学生成绩管理系统v30 / 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 score,int n,ch

2、ar 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,scoreN,c,x;

3、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 numbern)

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

5、 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由高到低排知名次表 Scoredes (num,score,n,name); printf(Please enter your choice:n); break; case 4: /按chengji由低到高排知名次表 Scoreas (num,score,n,name); printf(Please en

6、ter your choice:n); break; case 5: /按学号由小到大排知名次表 Numas (num,score,n,name); printf(Please enter your choice:n); break; case 6: /按学号由小到大排知名次表 Nameorder (num,score,n,name); printf(Please enter your choice:n); break; case 7: /按学号查询学生排名与其各科成绩 printf(请输入查找学号n); scanf(%d,&x); Searchbyno (num,score,n,x,name

7、); printf(Please enter your choice:n); break; case 8: /按某某查询学生排名与其各科成绩 printf(请输入查找某某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,scor

8、e,n,name); 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(); int i,sum=0; double ave; for(i=0;in

9、;i+) sum=sum+scorei; ave=(double)sum/n; printf(总分=%d,课程的平均分=%fn,sum,ave); 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(namek,namei); scorei=t,numi=h,strcpy(namei,temp); for(i=0;in;i+) printf(ID:%10

10、ld,name:%s,score:%dn,numi,namei,scorei);/以长整形打印用%ld 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=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,nam

11、e:%s,score:%dn,numi,namei,scorei);/以长整形打印用%ld int i,k,h,t,j; 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

12、:%dn,numi,namei,scorei);/以长整形打印用%ld void Nameorder(long num,int score,int n,char name10) /6。按某某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(

13、ID:%10ld,name:%s,score:%dn,numi,namei,scorei);/以长整形打印用%ld 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=h,strcpy(namei,temp)

14、; 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,char c,char name10)/

15、8。按某某查询学生排名与其考试成绩 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.案优秀良好中等与格不与格5个类别，统计每个类别的人数以与所占的百分比 i

16、nt 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(

17、中等人数%d,百分比:%f%n,c,C); printf(与格人数%d,百分比:%f%n,d,D); printf(不与格人数%d,百分比:%f%n,e,E);void List (long num,int score,int n,char name10) /10 输出每个学生的学号，考试成绩某某，以与课程总分和平均分 int i,sum=0; double ave; for(i=0;in;i+) sum=sum+scorei; ave=(double)sum/n; for(i=0;in;i+) printf(ID:%10ld,name:%s,score:%dn,numi,namei,scorei); printf(总分=%dn平均分%fn,sum,ave);