C程序设计第四版谭浩强习题例题第9章.docx
《C程序设计第四版谭浩强习题例题第9章.docx》由会员分享，可在线阅读，更多相关《C程序设计第四版谭浩强习题例题第9章.docx（48页珍藏版）》请在冰豆网上搜索。
C程序设计第四版谭浩强习题例题第9章
第9章
例9.1
#include
intmain（）
{
structStudent
{
longintnum;
charname[20];
charsex;
charaddr[20];
}a={10101,"LiLin",'M',"123BeijingRoad"};
printf（"No.%ld\nname:
%s\nsex:
%c\naddress:
%s\n",a.num,a.name,a.sex,a.addr）;
return0;
}
例9.2
#include
intmain（）
{
structStudent
{
intnum;
charname[20];
floatscore;
}student1,student2;
scanf（"%d%s%f",&student1.num,&student1.name,&student1.score）;
scanf（"%d%s%f",&student2.num,&student2.name,&student2.score）;
printf（"Thehigherscoreis:
\n"）;
if（student1.score>student2.score）
printf（"%d%s%6.2f\n",student1.num,student1.name,student1.score）;
elseif（student1.scoreprintf（"%d%s%6.2f\n",student2.num,student2.name,student2.score）;
else
{
printf（"%d%s%6.2f\n",student1.num,student1.name,student1.score）;
printf（"%d%s%6.2f\n",student2.num,student2.name,student2.score）;
}
return0;
}
例9.3
#include
#include
structPerspon
{
charname[20];
intcount;
}leader[3]={"Li",0,"Zhang",0,"Sun",0};
intmain（）
{
inti,j;
charleader_name[20];
for（i=1;i<=10;i++）
{
scanf（"%s",leader_name）;
for（j=0;j<3;j++）
if（strcmp（leader_name,leader[j].name）==0）leader[j].count++;
}
printf（"\nResult:
\n"）;
for（i=0;i<3;i++）
printf（"%5s:
%d\n",leader[i].name,leader[i].count）;
return0;
}
例9.4
#include
structStudent
{
intnum;
charname[20];
floatscore;
};
intmain（）
{
structStudentstu[5]={{10101,"Zhang",78},{10103,"Wang",98.5},{10106,"Li",86},
{10108,"Ling",73.5},{10110,"Sun",100}};
structStudenttemp;
constintn=5;
inti,j,k;
printf（"Theorderis:
\n"）;
for（i=0;i{
k=i;
for（j=i+1;jif（stu[j].score>stu[k].score）
k=j;
temp=stu[k];
stu[k]=stu[i];
stu[i]=temp;
}
for（i=0;iprintf（"%6d%8s%6.2f\n",stu[i].num,stu[i].name,stu[i].score）;
printf（"\n"）;
return0;
}
例9.5
#include
#include
intmain（）
{
structStudent
{
longnum;
charname[20];
charsex;
floatscore;
};
structStudentstu_1;
structStudent*p;
p=&stu_1;
stu_1.num=10101;
strcpy（stu_1.name,"LiLin"）;
stu_1.sex='M';
stu_1.score=89.5;
printf（"No.:
%ld\nname:
%s\nsex:
%c\nscore:
%5.1f\n",stu_1.num,stu_1.name,stu_1.sex,stu_1.score）;
printf（"\n"）;
printf（"No.:
%ld\nname:
%s\nsex:
%c\nscore:
%5.1f\n",（*p）.num,（*p）.name,（*p）.sex,（*p）.score）;
return0;
}
例9.6
#include
structStudent
{
intnum;
charname[20];
charsex;
intage;
};
structStudentstu[3]={{10101,"LiLin",'M',18},{10102,"ZhangFang",'M',19},{10104,"WangMin",'F',20}};
intmain（）
{
structStudent*p;
printf（"No.Namesexage\n"）;
for（p=stu;pprintf（"%5d%-20s%2c%4d\n",p->num,p->name,p->sex,p->age）;
return0;
}
例9.7
#include
#defineN3
structStudent
{
intnum;
charname[20]；
floatscore[3];
floataver;
};
intmain（）
{
voidinput（structStudentstu[]）;
structStudentmax（structStudentstu[]）;
voidprint（structStudentstud）;
structStudentstu[N],*p=stu;
input（p）;
print（max（p））;
return0;
}
voidinput（structStudentstu[]）
{
inti;
printf（"请输入各学生的信息：
学号、姓名、三门课成绩：
\n"）;
for（i=0;i{
scanf（"%d%s%f%f%f",&stu[i].num,&stu[i].name,&stu[i].score[0],&stu[i].score[1],&stu[i].score[2]）;
stu[i].aver=（stu[i].score[0]+stu[i].score[1]+stu[i].score[2]）/3.0;
}
}
structStudentmax（structStudentstu[]）
{
inti,m=0;
for（i=0;iif（stu[i].aver>stu[m].aver）m=i;
returnstu[m];
}
voidprint（structStudentstud）
{
printf（"\n成绩最高的学生是:
\n"）;
printf（"学号:
%d\n姓名：
%s\n三门成绩:
%5.1f,%5.1f,%5.1f\n平均成绩:
%6.2f\n",stud.num,stud.name,stud.score[0],stud.score[1],stud.score[2],stud.aver）;
}
例9.8
#include
#defineN3
structStudent
{
intnum;
floatscore;
structStudent*next;
};
intmain（）
{
structStudenta,b,c,*head,*p;
a.num=10101;a.score=89.5;
b.num=10103;b.score=90;
c.num=10107;c.score=85;
head=&a;
a.next=&b;
b.next=&c;
c.next=NULL;
p=head;
do
{
printf（"%ld%5.1f\n",p->num,p->score）;
p=p->next;
}while（p!
=NULL）;
return0;
}
例9.9
#include
#include
#defineLENsizeof（structStudent）
structStudent
{
longnum;
floatscore;
structStudent*next;
};
intn;
structStudent*creat（void）
{
structStudent*head;
structStudent*p1,*p2;
n=0;
p1=p2=（structStudent*）malloc（LEN）;
scanf（"%ld,%f",&p1->num,&p1->score）;
head=NULL;
while（p1->num!
=0）
{
n=n+1;
if（n==1）head=p1;
elsep2->next=p1;
p2=p1;
p1=（structStudent*）malloc（LEN）;
scanf（"%ld,%f",&p1->num,&p1->score）;
}
p2->next=NULL;
return（head）;
}
intmain（）
{
structStudent*pt;
pt=creat（）;
printf（"\nnum:
%ld\nscore:
%5.1f\n",pt->num,pt->score）;
return0;
}
例9.10
#include
#include
#defineLENsizeof（structStudent）
structStudent
{
longnum;
floatscore;
structStudent*next;
};
intn;
structStudent*creat（）
{
structStudent*head;
structStudent*p1,*p2;
n=0;
p1=p2=（structStudent*）malloc（LEN）;
scanf（"%ld,%f",&p1->num,&p1->score）;
head=NULL;
while（p1->num!
=0）
{
n=n+1;
if（n==1）head=p1;
elsep2->next=p1;
p2=p1;
p1=（structStudent*）malloc（LEN）;
scanf（"%ld,%f",&p1->num,&p1->score）;
}
p2->next=NULL;
return（head）;
}
voidprint（structStudent*head）
{
structStudent*p;
printf（"\nNow,These%drecordsare:
\n",n）;
p=head;
if（head!
=NULL）
do
{
printf（"%ld%5.1f\n",p->num,p->score）;
p=p->next;
}while（p!
=NULL）;
}
voidmain（）
{
structStudent*head;
head=creat（）;
print（head）;
}
例9.11
#include
struct
{
intnum;
charname[10];
charsex;
charjob;
union
{
intclas;
charposition[10];
}category;
}person[2];
intmain（）
{
inti;
for（i=0;i<2;i++）
{
printf（"pleaseenterthedataofperson:
\n"）;
scanf（"%d%s%c%c",&person[i].num,&person[i].name,&person[i].sex,&person[i].job）;
if（person[i].job=='s'）
scanf（"%d",&person[i].category.clas）;
elseif（person[i].job=='t'）
scanf（"%s",&person[i].category.position）;
elseprintf（"Inputerror!
"）;
}
printf（"\n"）;
printf（"No.namesexjobcalss/position\n"）;
for（i=0;i<2;i++）
{
if（person[i].job=='s'）
printf（"%-6d%-10s%-4c%-4c%-10d\n",person[i].num,person[i].name,person[i].sex,person[i].job,person[i].category.clas）;
else
printf（"%-6d%-10s%-4c%-4c%-10s\n",person[i].num,person[i].name,person[i].sex,person[i].job,person[i].category.position）;
}
return0;
}
例9.12
#include
intmain（）
{
enumColor{red,yellow,blue,white,black};
enumColori,j,k,pri;
intn,loop;
n=0;
for（i=red;i<=black;i++）
for（j=red;j<=black;j++）
if（i!
=j）
{
for（k=red;k<=black;k++）
if（k!
=i&&k!
=j）
{
n=n+1;
printf（"%-4d",n）;
for（loop=1;loop<=3;loop++）
{
switch（loop）
{
case1:
pri=i;break;
case2:
pri=j;break;
case3:
pri=k;break;
default:
break;
}
switch（pri）
{
casered:
printf（"%-10s","red"）;break;
caseyellow:
printf（"%-10s","yellow"）;break;
caseblue:
printf（"%-10s","blue"）;break;
casewhite:
printf（"%-10s","white"）;break;
caseblack:
printf（"%-10s","black"）;break;
default:
break;
}
}
printf（"\n"）;
}
}
printf（"\ntotal:
%d\n",n）;
return0;
}
习题（本人很懒，本次作业很多都没写scanf输入数据）
1.
#include
intmain（）
{
structDate
{
intyear;
intmonth;
intday;
}a={2015,6,15};
intb[]={31,28,31,30,31,30,31,31,30,31,30,31};
inti,leap=0,sum=0;
if（a.month>2）
{
for（i=0;isum+=b[i];
if（a.year%4==0&&a.year%100!
=0||a.year%400==0）
leap=1;
sum+=a.day+leap;
}
else
{
for（i=0;isum+=b[i];
sum+=a.day;
}
printf（"%d年%d月%d日是%d年的第%d天.\n",a.year,a.month,a.day,a.year,sum）;
}
2.
#include
structDate
{
intyear;
intmonth;
intday;
};
intmain（）
{
intdays（structDatec）;
structDatea={2015,6,15};
intsum;
sum=days（a）;
printf（"%d年%d月%d日是%d年的第%d天.\n",a.year,a.month,a.day,a.year,sum）;
}
intdays（structDatec）
{
intb[]={31,28,31,30,31,30,31,31,30,31,30,31};
inti,leap=0,s=0;
if（c.month>2）
{
for（i=0;is+=b[i];
if（c.year%4==0&&c.year%100!
=0||c.year%400==0）
leap=1;
s+=c.day+leap;
}
else
{
for（i=0;is+=b[i];
s+=c.day;
}
return（s）;
}
3.
#include
structStudent
{
longnum;
charname[10];
floatscore[3];
};
voidmain（）
{
voidprint（structStudent*q）;
structStudenta[5]={{10010,"John",88,89,90},{10012,"Jimmy",59,68,47},{10015,"Dorothy",89,78,99},{10020,"Moriarty",100,99.5,95},{10026,"Grace",78,60,75}};
structStudent*p=a;
print（p）;
}
voidprint（structStudent*q）
{
inti;
for（i=0;i<5;i++）
{
printf（"num:
%ld,name:
%s,scores:
%5.1f,%5.1f,%5.1f\n",q->num,q->name,q->score[0],q->score[1],q->score[2]）;
q++;
}
}
4.
#include
structStudent
{
longnum;
charname[10];
floatscore[3];
};
intmain（）
{
voidprint（structStudent*q）;
voidinput（structStudent*q）;
structStudenta[5];
structStudent*p=a;
input（p）;
print（p）;
return0;
}
voidinput（structStudent*q）
{
inti;
for（i=0;i<5;i++）
{
scanf（"%ld%s%f%f%f",&q->num,&q->name,&q->score[0],&q->score[1],&q->score[2]）;
q++;
}
}
voidprint（structStudent*q）
{
inti;
for（i=0;i<5;i++）
{
printf（"num:
%ld,name:
%s,scores:
%5.1f,%5.1f,%5.1f\n",q->num,q->name,q->score[0],q->score[1],q->score[2]）;
q++;
}
}
5.
#include
structStudent
{
longnum;
charname[10];
floatscore[3];
floataver;
};
intmain（）
{
voidinput（structStudent*q）;
voidprint（structStudent*q）;
structStudenta[10];
structStudent*p=a;
inti,j=0,k=0;
input（p）;
print（p）;
for（i=0;i<=10;i++）
if（k
升级会员 