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;jscanf("%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;iprintf("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;iprintf("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;iprintf("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;iprintf("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;jprintf("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(xhigh=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;jprintf("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]);
}
}