学生成绩管理系统v30.docx
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学生成绩管理系统v30.docx
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学生成绩管理系统v30
//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由高到低排知名次表
Scoredes(num,score,n,name);
printf("Pleaseenteryourchoice:
\n");
break;
case4:
//按chengji由低到高排知名次表
Scoreas(num,score,n,name);
printf("Pleaseenteryourchoice:
\n");
break;
case5:
//按学号由小到大排知名次表
Numas(num,score,n,name);
printf("Pleaseenteryourchoice:
\n");
break;
case6:
//按学号由小到大排知名次表
Nameorder(num,score,n,name);
printf("Pleaseenteryourchoice:
\n");
break;
case7:
//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);
printf("Pleaseenteryourchoice:
\n");
break;
case8:
//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("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(); } } { 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); } { 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;i printf("ID: %10ld,name: %s,score: %d\n",num[i],name[i],score[i]);//以长整形打印用%ld } { 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;i printf("ID: %10ld,name: %s,score: %d\n",num[i],name[i],score[i]);//以长整形打印用%ld } { 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。 按某某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 } } { 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(x high=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。 按某某查询学生排名与其考试成绩 { 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 { 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("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); } voidList(longnum[],intscore[],intn,charname[][10])//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 { inti,sum=0; doubleave; for(i=0;i { sum=sum+score[i]; } ave=(double)sum/n; for(i=0;i printf("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); }
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