学生成绩管理系统v3.0.docx
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//成绩管理系统v3.0
//能动1302王清栋1306030217
#include
#include
#include
#defineN30
voidInput(longnum[],intscore[],intn,charname[][10]);
voidTotalave(intscore[],intn);
voidScoredes(longnum[],intscore[],intn,charname[][10]);
voidScoreas(longnum[],intscore[],intn,charname[][10]);
voidNumas(longnum[],intscore[],intn,charname[][10]);
voidNameorder(longnum[],intscore[],intn,charname[][10]);
voidSearchbyno(longnum[],intscore[],intn,intx,charname[][10]);
voidSearchbyname(longnum[],intscore[],intn,charc[],charname[][10]);
voidstatistis(intscore[],intn);
voidList(longnum[],intscore[],intn,charname[][10]);
intmain()
{
intn,score[N],c,x;
longnum[N];
charname[N][10];
chary[10];
printf("输入学生人数");
scanf("%d",&n);
//getchar();
printf("1.Inputrecord\n");
printf("2.Caculatetotelandaveragescoreofeverycourse\n");
printf("3.Sortindescendingorderbyscore\n");
printf("4.Sortinascendingorderbyscore\n");
printf("5.Sortinascendingorderbynumber\n");
printf("6.Sortindictionaryorderbyname\n");
printf("7.Searchbynumber\n");
printf("8.searchbyname\n");
printf("9.Statisticanalysis\n");
printf("10.Listrecord\n");
printf("0.Exit\n");
printf("Pleaseenteryourchoice:
\n");
printf("\n");
for(;;)
{
scanf("%d",&c);
switch(c)
{
case1:
//录入学生学号和各科成绩
Input(num,score,n,name);
printf("Pleaseenteryourchoice:
\n");
break;
case2:
//计算每门课程的总分和平均分
Totalave(score,n);
printf("Pleaseenteryourchoice:
\n");
break;
case3:
//按chengji由高到低排出名次表
Scoredes(num,score,n,name);
printf("Pleaseenteryourchoice:
\n");
break;
case4:
//按chengji由低到高排出名次表
Scoreas(num,score,n,name);
printf("Pleaseenteryourchoice:
\n");
break;
case5:
//按学号由小到大排出名次表
Numas(num,score,n,name);
printf("Pleaseenteryourchoice:
\n");
break;
case6:
//按学号由小到大排出名次表
Nameorder(num,score,n,name);
printf("Pleaseenteryourchoice:
\n");
break;
case7:
//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("Pleaseenteryourchoice:
\n");
break;
case8:
//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("Pleaseenteryourchoice:
\n");
case9:
//成绩分析所占百分比
statistis(score,n);
printf("Pleaseenteryourchoice:
\n");
break;
case10:
//全部输出
List(num,score,n,name);
printf("Pleaseenteryourchoice:
\n");
break;
case0:
exit(0);
}
}
return0;
}
voidInput(longnum[],intscore[],intn,charname[][10])//1
{
inti;
for(i=0;i{
printf("Inputstudent'sID,nameandscore");
scanf("%ld",&num[i]);
scanf("%s",name[i]);
scanf("%d",&score[i]);
//getchar();
}
}
voidTotalave(intscore[],intn)//2.计算课程的总分和平均分
{
inti,sum=0;
doubleave;
for(i=0;i{
sum=sum+score[i];
}
ave=(double)sum/n;
printf("总分=%d,课程的平均分=%f\n",sum,ave);
}
voidScoredes(longnum[],intscore[],intn,charname[][10])//3.按学生的分由高到低排出名次表
{
inti,j,k,t,h;
chartemp[10];
for(i=0;i{
k=i;
for(j=i+1;j{
if(score[j]>score[k])
k=j;
}
if(i!
=k)
{
t=score[k],h=num[k],strcpy(temp,name[k]);
score[k]=score[i],num[k]=num[i],strcpy(name[k],name[i]);
score[i]=t,num[i]=h,strcpy(name[i],temp);
}
}
for(i=0;iprintf("ID:
%10ld,name:
%s,score:
%d\n",num[i],name[i],score[i]);//以长整形打印用%ld
}
voidScoreas(longnum[],intscore[],intn,charname[][10])//4.按学生的分由高到低排出名次表
{
inti,k,t,h,j;
chartemp[10];
for(i=0;i{
k=i;
for(j=i+1;j{
if(score[j]k=j;
}
if(i!
=k)
{
t=score[k],h=num[k],strcpy(temp,name[k]);
score[k]=score[i],num[k]=num[i],strcpy(name[k],name[i]);
score[i]=t,num[i]=h,strcpy(name[i],temp);
}
}
for(i=0;iprintf("ID:
%10ld,name:
%s,score:
%d\n",num[i],name[i],score[i]);//以长整形打印用%ld
}
voidNumas(longnum[],intscore[],intn,charname[][10])//5.按学号由小到大排出名次表
{
inti,k,h,t,j;
chartemp[10];
for(i=0;i{
k=i;
for(j=i+1;j{
if(num[j]k=j;
}
if(i!
=k)
{
t=score[k],h=num[k],strcpy(temp,name[k]);
score[k]=score[i],num[k]=num[i],strcpy(name[k],name[i]);
score[i]=t,num[i]=h,strcpy(name[i],temp);
}
}
for(i=0;i{
printf("ID:
%10ld,name:
%s,score:
%d\n",num[i],name[i],score[i]);//以长整形打印用%ld
}
}
voidNameorder(longnum[],intscore[],intn,charname[][10])//6。
按姓名的字典顺序排出成绩表
{
inti,k,t,h;
chartemp[10];
for(i=0;i{
for(k=i+1;k{
if(strcmp(name[i],name[k])>0)
{
t=score[k],h=num[k],strcpy(temp,name[k]);
score[k]=score[i],num[k]=num[i],strcpy(name[k],name[i]);
score[i]=t,num[i]=h,strcpy(name[i],temp);
}
}
}
for(i=0;i{
printf("ID:
%10ld,name:
%s,score:
%d\n",num[i],name[i],score[i]);//以长整形打印用%ld
}
}
voidSearchbyno(longnum[],intscore[],intn,intx,charname[][10])//7.按学号查询学生排名及考试成绩
{
inthigh=n-1,low=0,mid,c=1,pos,find=0,i,k,h,j,t;
chartemp[10];
for(i=0;i{
k=i;
for(j=i+1;j{
if(num[j]k=j;
}
if(i!
=k)
{
t=score[k],h=num[k],strcpy(temp,name[k]);
score[k]=score[i],num[k]=num[i],strcpy(name[k],name[i]);
score[i]=t,num[i]=h,strcpy(name[i],temp);
}
}
while(find==0&&low<=high)
{
mid=(high+low)/2;
if(x>num[mid])
low=mid+1;
elseif(xhigh=mid-1;
else
{
pos=mid;
find=1;
}
}
if(find==0)
printf("notfind\n");
else
{
for(i=0;i{
if(score[i]>score[pos])
c++;
}
printf("ID:
%10ld,name:
%s,order:
%d,",num[pos],name[pos],c);//以长整形打印用%ld
printf("score:
%d\n",score[pos]);
}
}
voidSearchbyname(longnum[],intscore[],intn,charc[],charname[][10])//8。
按姓名查询学生排名及其考试成绩
{
inti,pos=-1,d=1;
for(i=0;i{if(strcmp(name[i],c)==0)
pos=i;}
if(pos==-1)
printf("notfind\n");
else
{
for(i=0;i{
if(score[i]>score[pos])
d++;
}
}
printf("ID:
%10ld,name:
%s,order:
%d,",num[pos],name[pos],d);//以长整形打印用%ld
printf("score:
%d\n",score[pos]);
}
voidstatistis(intscore[],intn)//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
{
inta=0,b=0,c=0,d=0,e=0,i;
doubleA,B,C,D,E;
for(i=0;i{
if(score[i]>=90)
a++;
elseif(score[i]>=80)
b++;
elseif(score[i]>=70)
c++;
elseif(score[i]>=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);
}
voidList(longnum[],intscore[],intn,charname[][10])//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
{
inti,sum=0;
doubleave;
for(i=0;i{
sum=sum+score[i];
}
ave=(double)sum/n;
for(i=0;iprintf("ID:
%10ld,name:
%s,score:
%d\n",num[i],name[i],score[i]);
printf("总分=%d\n平均分%f\n",sum,ave);
}