C语言 苏小红 第五版 十三章试验题答案

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C语言苏小红第五版十三章试验题答案

#includestdio.h

#includestring.h

#includestdlib.h

#defineN30

#defineMAX_LEN10

#defineM3

typedefstructstudent

{

longstudentID;

charstudentName[10];

intscore[3];

}STUDENT;

voidInputScore(STUDENTstu[],intn);

voidSumforCorse(STUDENTstu[],intn,floatsumcorse[],floatavercorse[]);

voidSumforStudent(STUDENTstu[],intn,floatsumstudent[],floataverstudent[]);

voidDateScore(STUDENTstu[],intn,int(*compare)(inta,intb));

voidDateNum(STUDENTstu[],intn);

voidDateName(STUDENTstu[],intn);

intLinSearch(STUDENTstu[],longx,intn);

intLinSearchname(STUDENTstu[],charname[],intn);

voidRateScore(STUDENTstu[],intn);

voidPrintfScoreNum(STUDENTstu[],intn,floatsumcorse[],floatavercorse[]);

voidPrintf(STUDENTstu[],intn);

voidSwapnum(long*a,long*b);

voidSwapsum(int*a,int*b);

voidSwapscore(int*a,int*b);

intAscending(inta,intb);

intDescending(inta,intb);

voidWritetoFile(STUDENTstu[],intn);

intReadfromFILE(STUDENTstu[]);

main()

{intn,m,pos=0,i;

longx=0;

floatavercorse[3]={0},averstudent[N]={0},sumcorse[3]={0},sumstudent[N]={0};

charname[MAX_LEN];

STUDENTstu[N];

printf(howmanystudent?);

scanf(%d,n);

InputScore(stu,n);

printf(计算每门课程的总分和平均分输入1\n);

printf(计算每个学生的总分和平均分输入2\n);

printf(按每个学生的总分由高到低输入3\n);

printf(依照每个学生的总分由低到高输入4\n);

printf(学号有小到大排出成绩表输入5\n);

printf(按姓名在字典中的排序输入6\n);

printf(按学号查询学生排名及各科考试成绩比输入7\n);

printf(按姓名查询学生排名及各科考试成绩比输入8\n);

printf(按成绩百分比输入9\n);

printf(输出每个学生的学号姓名各科考试成绩总分平均分及每门课程的总分平均分输入10\n);

printf(将学生信息写入文件输入11：\n);

printf(从文件中读取学生信息输入12:\n);

scanf(%d,m);

switch(m)

{

case1:

SumforCorse(stu,n,sumcorse,avercorse);

break;

case2:

SumforStudent(stu,n,sumstudent,averstudent);

break;

case3:

DateScore(stu,n,Descending);

Printf(stu,n);

break;

case4:

DateScore(stu,n,Ascending);

Printf(stu,n);

break;

case5:

DateNum(stu,n);

Printf(stu,n);

break;

case6:

DateName(stu,n);

Printf(stu,n);

break;

case7:

{intj;

DateScore(stu,n,Descending);

printf(inputthenumberyouwanttosearch:);

scanf(%ld,x);

pos=LinSearch(stu,x,n);

if(pos!=-1)

printf(MT\tEN\tPH\t:\n);

for(j=0;j3;j++)

{

printf(%d\t,stu[pos].score[j]);

}

printf(第%d名\n,pos+1);

break;

}

case8:

{intj;

DateScore(stu,n,Descending);

printf(inputthenameyouwanttosearch:\n);

scanf(%s,name);

pos=LinSearchname(stu,name,n);

if(pos!=-1)

printf(MT\tEN\tPH\t:\n);

for(j=0;j3;j++)

{printf(%d\t,stu[pos].score[j]);}

}

printf(第%d名\n,pos+1);

break;

C语言苏小红第五版十三章试验题答案

case9:

RateScore(stu,n);

break;

case10:

PrintfScoreNum(stu,n,sumcorse,avercorse);

break;

case11:

WritetoFile(stu,n);

break;

case12:

i=ReadfromFILE(stu);

Printf(stu,i);

break;

}

}

voidInputScore(STUDENTstu[],intn)

{

inti,j,m=3;

for(i=0;in;i++)

{

printf(inputthe%dstudentIDnamescore(MTENPH):,i+1);

scanf(%ld,stu[i].studentID);

scanf(%s,stu[i].studentName);

for(j=0;jm;j++)

{

scanf(%d,stu[i].score[j]);

}

}

}

voidSumforCorse(STUDENTstu[],intn,floatsumcorse[],floatavercorse[])

{

inti,j;

for(j=0;j3;j++)

{

for(i=0;in;i++)

{

sumcorse[j]=sumcorse[j]+stu[i].score[j];

}

avercorse[j]=sumcorse[j]/n;

switch(j)

{

case0:

printf(theMTtotleMT:%f\n,sumcorse[j]);

printf(theMTaverMT:%f\n,avercorse[j]);

break;

case1:

printf(theENtotleEN:%f\n,sumcorse[j]);

printf(theENaverEN:%f\n,avercorse[j]);

break;

case2:

printf(thePHtotlePH:%f\n,sumcorse[j]);

printf(thePHaverPH:%f\n,avercorse[j]);

break;

}

}

}

voidSumforStudent(STUDENTstu[],intn,floatsumstudent[],floataverstudent[])

{

inti,j;

for(i=0;in;i++)

{

for(j=0;j3;j++)

{

sumstudent[i]=sumstudent[i]+stu[i].score[j];

}

averstudent[i]=sumstudent[i]/3;

printf(第%d个thetotlescoreandaverageis%f%f\n,i+1,sumstudent[i],averstudent[i]);

}

}

voidDateScore(STUDENTstu[],intn,int(*compare)(inta,intb))

{inti,j,k,m,t,sumstudent[N];

chartemp[MAX_LEN];

for(i=0;in;i++)

{

for(j=0;j3;j++)

{

sumstudent[i]=sumstudent[i]+stu[i].score[j];

}

}

for(t=0;tn-1;t++)

{

k=t;

for(m=t+1;mn;m++)

{

if((*compare)(sumstudent[k],sumstudent[m]))

{

k=m;

}

if(k!=t)

{

Swapsum(sumstudent[t],sumstudent[k]);

Swapnum(stu[t].studentID,stu[k].studentID);

Swapscore(stu[t].score,stu[k].score);

strcpy(temp,stu[t].studentName);

strcpy(stu[t].studentName,stu[k].studentName);

strcpy(stu[k].studentName,temp);

}

}

}

}

voidSwapsum(int*a,int*b)

{inttemp;

temp=*a;

*a=*b;

*b=temp;

}

voidSwapnum(long*a,long*b)

{

longtemp;

temp=*a;

*a=*b;

*b=temp;

}

voidSwapscore(int*a,int*b)

{

inttemp[M],i;

for(i=0;i3;i++)

{temp[i]=a[i];

a[i]=b[i];

b[i]=temp[i];

}

}

intAscending(inta,intb)

{

returnab;

}

intDescending(inta,intb)

{

returnab;

}

voidDateNum(STUDENTstu[],intn)

{

inti,j,k;

chartemp[MAX_LEN];

for(i=0;in-1;i++)

{

k=i;

for(j=i+1;jn;j++)

{

if(stu[j].studentIDstu[k].studentID)

{k=j;

}

if(k!=i)

{

Swapnum(stu[i].studentID,stu[k].studentID);

Swapscore(stu[k].score,stu[i].score);

strcpy(temp,stu[i].studentName);

strcpy(stu[i].studentName,stu[k].studentName);

strcpy(stu[k].studentName,temp);

}

}

}

}

voidDateName(STUDENTstu[],intn)

{

inti,j,k;

chartemp[MAX_L

EN];

for(i=0;in;i++)

{

k=i;

for(j=i+1;jn;j++)

{if(strcmp(stu[k].studentName,stu[j].studentName)0)

{

Swapnum(stu[i].stude

C语言苏小红第五版十三章试验题答案

ntID,stu[k].studentID);

Swapscore(stu[i].score,stu[k].score);

strcpy(temp,stu[i].studentName);

strcpy(stu[i].studentName,stu[k].studentName);

strcpy(stu[k].studentName,temp);

}

}

}

}

intLinSearch(STUDENTstu[],longx,intn)

{

inti;

for(i=0;in;i++)

{

if(stu[i].studentID==x)

returni;

}

return-1;

}

intLinSearchname(STUDENTstu[],charname[],intn)

{

inti;

for(i=0;in;i++)

{

if(strcmp(name,stu[i].studentName)==0)

returni;

}

return-1;

}

voidRateScore(STUDENTstu[],intn)

{

inti,a,b,c,d,e,j;

staticfloatrate1,rate2,rate3,rate4,rate5;

for(j=0;j3;j++)

{

a=0;b=0;c=0;d=0;e=0;

for(i=0;in;i++)

{if(stu[i].score[j]=90stu[i].score[j]=100)

{a++;

}

if(stu[i].score[j]=80stu[i].score[j]90)

{b++;

}

if(stu[i].score[j]=70stu[i].score[j]80)

{c++;

}

if(stu[i].score[j]=60stu[i].score[j]70)

{d++;

}

if(stu[i].score[j]=0stu[i].score[j]60)

{e++;

}

rate1=(float)a/n;

rate2=(float)b/n;

rate3=(float)c/n;

rate4=(float)d/n;

rate5=(float)e/n;

}

switch(j)

{

case0:

printf(MTis:\n);

printf(优秀:%d所占百分比:%f\n,a,rate1);

printf(良好:%d所占百分比:%f\n,b,rate2);

printf(中等:%d所占百分比:%f\n,c,rate3);

printf(及格:%d所占百分比:%f\n,d,rate4);

printf(不及格:%d所占百分比:%f\n,e,rate5);

break;

case1:

printf(ENis:\n);

printf(优秀:%d所占百分比:%f\n,a,rate1);

printf(良好:%d所占百分比:%f\n,b,rate2);

printf(中等:%d所占百分比:%f\n,c,rate3);

printf(及格:%d所占百分比:%f\n,d,rate4);

printf(不及格:%d所占百分比:%f\n,e,rate5);

break;

case2:

printf(PHis:\n);

printf(优秀:%d所占百分比:%f\n,a,rate1);

printf(良好:%d所占百分比:%f\n,b,rate2);

printf(中等:%d所占百分比:%f\n,c,rate3);

printf(及格:%d所占百分比:%f\n,d,rate4);

printf(不及格:%d所占百分比:%f\n,e,rate5);

break;

}

}

}

voidPrintfScoreNum(STUDENTstu[],intn,floatsumcorse[],floatavercorse[])

{

inti,j,k;

for(i=0;in;i++)

{

printf(%ld,stu[i].studentID);

puts(stu[i].studentName);

printf(thescoreMT\tEN\tPH\t\n:);

for(j=0;j3;j++)

{

printf(%d\t,stu[i].score[j]);

}

printf(\n);

}

for(j=0;j3;j++)

{

for(i=0;in;i++)

{

sumcorse[j]=sumcorse[j]+stu[i].score[j];

}

avercorse[j]=sumcorse[j]/n;

}

for(k=0;k3;k++)

{

printf(thesumandaveris%f%f\n,sumcorse[k],avercorse[k]);

}

}

voidPrintf(STUDENTstu[],intn)

{

inti,j;

for(i=0;in;i++)

{

printf(%ld\n,stu[i].s