学生成绩管理系统v40.docx
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学生成绩管理系统v40.docx
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学生成绩管理系统v40
//成绩管理系统v1.0
//能动1302王清栋1306030217
#include
#include
#defineN30
#defineM6
voidInput(longnum[],intscore[][M],intn,intm);
voidTotalave(intscore[][M],intn,intm);
voidevestuTotalave(intscore[][M],intn,intm,longnum[]);
voidScoredes(longnum[],intscore[][M],intn,intm);
voidScoreas(longnum[],intscore[][M],intn,intm);
voidNumas(longnum[],intscore[][M],intn,intm);
voidSearch(longnum[],intscore[][M],intn,intx,intm);
voidstatistis(longnum[],intscore[][M],intn,intm);
voidList(longnum[],intscore[][M],intn,intm);
intmain()
{
intn,score[N][M],c,x,m;
longnum[N];
printf("输入学生人数");
scanf("%d",&n);
printf("输入考试科目");
scanf("%d",&m);
printf("1.Inputrecord\n");
printf("2.Caculatetotelandaveragescoreofeverycourse\n");
printf("3.Caculatetotelandaveragescoreofeverystudent\n");
printf("4.Sortindescendingorderbytotalscoreofeverystudent\n");
printf("5.Sortinascendingorderbytotalscoreofeverystudent\n");
printf("6.Sortinascendingorderbynumber\n");
printf("7.Searchbynumber\n");
printf("8.Statisticanalysisforeverycourse\n");
printf("9.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,m);
printf("Pleaseenteryourchoice:
\n");
break;
case2:
//计算每门课程的总分和平均分
Totalave(score,n,m);
printf("Pleaseenteryourchoice:
\n");
break;
case3:
//计算每个学生的总分和平均分
evestuTotalave(score,n,m,num);
break;
case4:
//按每个学生的总分由高到低排出名次表
Scoredes(num,score,n,m);
printf("Pleaseenteryourchoice:
\n");
break;
case5:
//按每个学生的总分由低到高排出名次表
Scoreas(num,score,n,m);
printf("Pleaseenteryourchoice:
\n");
break;
case6:
//按学号由小到大排出名次表
Numas(num,score,n,m);
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);
Search(num,score,n,x,m);
printf("Pleaseenteryourchoice:
\n");
break;
case8:
//成绩分析所占百分比
statistis(num,score,n,m);
printf("Pleaseenteryourchoice:
\n");
break;
case9:
//全部输出
List(num,score,n,m);
Totalave(score,n,m);
printf("Pleaseenteryourchoice:
\n");
break;
case0:
exit(0);
}
}
return0;
}
voidInput(longnum[],intscore[][M],intn,intm)//1
{
inti,j;
for(i=0;i { printf("Inputstudent'sIDandscore"); scanf("%ld",&num[i]); for(j=0;j scanf("%d",&score[i][j]); } } voidTotalave(intscore[][M],intn,intm)//2.计算每门课程的总分和平均分 { inti,j,sum[M]; doubleave[M]; for(j=0;j { sum[j]=0; for(i=0;i { sum[j]=sum[j]+score[i][j]; } ave[j]=(double)sum[j]/n; } for(i=0;i printf("科目%d的总分=%d,课程的平均分=%f\n",i+1,sum[i],ave[i]); } voidevestuTotalave(intscore[][M],intn,intm,longnum[])//3.计算每个学生的总分和平均分 { inti,j,sum[N]; doubleave[N]; for(i=0;i { sum[i]=0; for(j=0;j { sum[i]=sum[i]+score[i][j]; } ave[i]=(double)sum[i]/m; } for(i=0;i printf("学号为%ld的总分=%d,其平均分=%f\n",num[i],sum[i],ave[i]); } voidScoredes(longnum[],intscore[][M],intn,intm)//4.按每个学生的总分由高到低排出名次表 { inti,j,k,t,h,sum[N]; for(i=0;i { sum[i]=0; for(j=0;j { sum[i]=sum[i]+score[i][j]; } } for(i=0;i { k=i; for(j=i+1;j { if(sum[j]>sum[k]) k=j; } if(i! =k) { t=sum[k],h=num[k]; sum[k]=sum[i],num[k]=num[i]; sum[i]=t,num[i]=h; } } for(i=0;i printf("ID: %10ld,score: %d\n",num[i],sum[i]);//以长整形打印用%ld } voidScoreas(longnum[],intscore[][M],intn,intm)//5.按每个学生的总分由di到gao排出名次表 { inti,j,k,t,h,sum[N]; for(i=0;i { sum[i]=0; for(j=0;j { sum[i]=sum[i]+score[i][j]; } } for(i=0;i { k=i; for(j=i+1;j { if(sum[j] k=j; } if(i! =k) { t=sum[k],h=num[k]; sum[k]=sum[i],num[k]=num[i]; sum[i]=t,num[i]=h; } } for(i=0;i printf("ID: %10ld,score: %d\n",num[i],sum[i]);//以长整形打印用%ld } voidNumas(longnum[],intscore[][M],intn,intm)//6.按学号由小到大排出名次表 { inti,j,k,t[M],h,l; for(i=0;i { k=i; for(j=i+1;j { if(num[j] k=j; } if(i! =k) { h=num[k]; num[k]=num[i]; num[i]=h; for(l=0;l { t[l]=score[k][l]; score[k][l]=score[i][l]; score[i][l]=t[l]; } } } for(i=0;i { printf("ID: %10ld\n",num[i]);//以长整形打印用%ld for(j=0;j printf("project%dscore: %d\n",j+1,score[i][j]); } } voidSearch(longnum[],intscore[][M],intn,intx,intm)//7.按学号查询学生排名及其各科成绩 { inthigh=n-1,low=0,mid,c=1,pos,o,find=0,i,j,k,t[M],h,sum[N],l; for(i=0;i { sum[i]=0; for(j=0;j { sum[i]=sum[i]+score[i][j]; } } for(i=0;i { k=i; for(j=i+1;j { if(num[j] k=j; } if(i! =k) { h=num[k],o=sum[k]; num[k]=num[i],sum[k]=sum[i]; num[i]=h,sum[i]=o; for(l=0;l { t[l]=score[k][l]; score[k][l]=score[i][l]; score[i][l]=t[l]; } } } 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(sum[i]>sum[pos]) c++; } printf("ID: %10ld\n",num[pos]);//以长整形打印用%ld for(j=0;j printf("project%dscore: %d\n",j+1,score[pos][j]); printf("allscore: %d,order: %d\n",sum[pos],c); } } voidstatistis(longnum[],intscore[][M],intn,intm)//8. { inta=0,b=0,c=0,d=0,e=0,i,j; doubleA,B,C,D,E; for(j=0;j { for(i=0;i { if(score[i][j]>=90) a++; elseif(score[i][j]>=80) b++; elseif(score[i][j]>=70) c++; elseif(score[i][j]>=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("project%d\n",j+1); 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[][M],intn,intm) { inti,j,sum[N]; doubleave[N]; for(i=0;i { sum[i]=0; for(j=0;j { sum[i]=sum[i]+score[i][j]; } ave[i]=(double)sum[i]/m; } for(i=0;i { printf("ID: %10ld\n",num[i]); for(j=0;j { printf("score: %d\n",score[i][j]); } printf("总分=%d\n平均分%f\n",sum[i],ave[i]); } }
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