学生成绩管理系统(共8页).docx

精选优质文档-倾情为你奉上/成绩管理系统v3.0 / 能动1302 王清栋 #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 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,int n,char name10);int main() int n,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 numbern"); 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); 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 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("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); 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;i<n;i+) printf("Input student's 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; double ave; 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 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;i<n;i+) k=i; for(j=i+1;j<n;j+) if (scorej>scorek) 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;i<n;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;i<n;i+) k=i; for(j=i+1;j<n;j+) if (scorej<scorek) 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;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) 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;i<n;i+) printf("ID:%10ld,name:%s,score:%dn",numi,namei,scorei);/以长整形打印用%ld void 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;i<n;i+) 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%ld void 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;i<n;i+) 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); while(find=0&&low<=high) mid=(high+low)/2; if(x>nummid) low=mid+1; else if(x<nummid) high=mid-1; else pos=mid; find=1; if(find=0) printf("not findn"); else for(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%ld printf("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<n;i+) if(strcmp(namei,c)=0) pos=i; if(pos=-1) printf("not findn"); else for(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%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，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<n;i+) if(scorei>=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，考试成绩姓名，以及课程总分和平均分 int i,sum=0; double ave; for(i=0;i<n;i+) sum=sum+scorei; ave=(double)sum/n; for(i=0;i<n;i+) printf("ID:%10ld,name:%s,score:%dn",numi,namei,scorei); printf("总分=%dn平均分%fn",sum,ave);专心-专注-专业