用C语言开发简单的应用系统程序，源代码不得少于150行

Question

用C语言开发简单的应用系统程序，源代码不得少于150行，必须用Turbo C2.0编程，程序应有友好的人机交互界面、完善的功能和实用性，大哥大姐们，帮帮忙拉，我实在是不会做啊。。。。。

Answer 1

火车站售票查询系统：

#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int shoudsave=0 ;
int count1=0,count2=0,mark=0,mark1=0 ;
/*定义存储火车信息的结构体*/
struct train
{
char num[10];/*列车号*/
char city[10];/*目的城市*/
char takeoffTime[10];/*发车时间*/
char receiveTime[10];/*到达时间*/
int price;/*票价*/
int bookNum ;/*票数*/
};
/*订票人的信息*/
struct man
{
char num[10];/*ID*/
char name[10];/*姓名*/
int bookNum ;/*需求的票数*/
};
/*定义火车信息链表的结点结构*/
typedef struct node
{
struct train data ;
struct node * next ;
}Node,*Link ;
/*定义订票人链表的结点结构*/
typedef struct people
{
struct man data ;
struct people*next ;
}bookMan,*bookManLink ;
/* 初始界面*/
void printInterface()
{
puts("********************************************************");
puts("* Welcome to use the system of booking tickets *");
puts("********************************************************");
puts("* You can choose the operation: *");
puts("* 1:Insert a train information *");
puts("* 2:Inquire a train information *");
puts("* 3:Book a train ticket *");
puts("* 4:Update the train information *");
puts("* 5:Advice to you about the train *");
puts("* 6:save information to file *");
puts("* 7:quit the system *");
puts("********************************************************");
}
/*添加一个火车信息*/
void InsertTraininfo(Link linkhead)
{
struct node *p,*r,*s ;
char num[10];
r = linkhead ;
s = linkhead->next ;
while(r->next!=NULL)
r=r->next ;
while(1)
{
printf("please input the number of the train(0-return)");
scanf("%s",num);
if(strcmp(num,"0")==0)
break ;
/*判断是否已经存在*/
while(s)
{
if(strcmp(s->data.num,num)==0)
{
printf("the train '%s'has been born!\n",num);
return ;
}
s = s->next ;
}
p = (struct node*)malloc(sizeof(struct node));
strcpy(p->data.num,num);
printf("Input the city where the train will reach:");
scanf("%s",p->data.city);
printf("Input the time which the train take off:");
scanf("%s",p->data.takeoffTime);
printf("Input the time which the train receive:");
scanf("%s",&p->data.receiveTime);
printf("Input the price of ticket:");
scanf("%d",&p->data.price);
printf("Input the number of booked tickets:");
scanf("%d",&p->data.bookNum);
p->next=NULL ;
r->next=p ;
r=p ;
shoudsave = 1 ;
}
}
/*打印火车票信息*/
void printTrainInfo(struct node*p)
{
puts("\nThe following is the record you want:");
printf(">>number of train: %s\n",p->data.num);
printf(">>city the train will reach: %s\n",p->data.city);
printf(">>the time the train take off: %s\nthe time the train reach: %s\n",p->data.takeoffTime,p->data.receiveTime);
printf(">>the price of the ticket: %d\n",p->data.price);
printf(">>the number of booked tickets: %d\n",p->data.bookNum);
}

struct node * Locate1(Link l,char findmess[],char numorcity[])
{
Node*r ;
if(strcmp(numorcity,"num")==0)
{
r=l->next ;
while(r)
{
if(strcmp(r->data.num,findmess)==0)
return r ;
r=r->next ;
}
}
else if(strcmp(numorcity,"city")==0)
{
r=l->next ;
while(r)
{
if(strcmp(r->data.city,findmess)==0)
return r ;
r=r->next ;
}
}
return 0 ;
}

/*查询火车信息*/
void QueryTrain(Link l)

{
Node *p ;
int sel ;
char str1[5],str2[10];
if(!l->next)
{
printf("There is not any record !");
return ;
}
printf("Choose the way:\n>>1:according to the number of train;\n>>2:according to the city:\n");
scanf("%d",&sel);
if(sel==1)
{
printf("Input the the number of train:");
scanf("%s",str1);
p=Locate1(l,str1,"num");
if(p)
{
printTrainInfo(p);
}
else
{
mark1=1 ;
printf("\nthe file can't be found!");
}
}
else if(sel==2)
{
printf("Input the city:");
scanf("%s",str2);
p=Locate1(l,str2,"city");
if(p)
{
printTrainInfo(p);
}
else
{
mark1=1 ;
printf("\nthe file can't be found!");
}
}
}

/*订票子模块*/
void BookTicket(Link l,bookManLink k)
{
Node*r[10],*p ;
char ch,dem ;
bookMan*v,*h ;
int i=0,t=0 ;
char str[10],str1[10],str2[10];
v=k ;
while(v->next!=NULL)
v=v->next ;
printf("Input the city you want to go: ");
scanf("%s",&str);
p=l->next ;
while(p!=NULL)
{
if(strcmp(p->data.city,str)==0)
{
r[i]=p ;
i++;
}
p=p->next ;
}
printf("\n\nthe number of record have %d\n",i);
for(t=0;t<i;t++)
printTrainInfo(r[t]);
if(i==0)
printf("\n\t\t\tSorry!Can't find the train for you!\n");
else
{
printf("\ndo you want to book it?<1/0>\n");
scanf("%d",&ch);
if(ch == 1)
{
h=(bookMan*)malloc(sizeof(bookMan));
printf("Input your name: ");
scanf("%s",&str1);
strcpy(h->data.name,str1);
printf("Input your id: ");
scanf("%s",&str2);
strcpy(h->data.num,str2);
printf("Input your bookNum: ");
scanf("%d",&dem);
h->data.bookNum=dem ;
h->next=NULL ;
v->next=h ;
v=h ;
printf("\nLucky!you have booked a ticket!");
getch();
shoudsave=1 ;
}
}
}
bookMan*Locate2(bookManLink k,char findmess[])
{
bookMan*r ;
r=k->next ;
while(r)
{
if(strcmp(r->data.num,findmess)==0)
{
mark=1 ;
return r ;
}
r=r->next ;
}
return 0 ;
}
/*修改火车信息*/
void UpdateInfo(Link l)
{
Node*p ;
char findmess[20],ch ;
if(!l->next)
{
printf("\nthere isn't record for you to modify!\n");
return ;
}
else
{
QueryTrain(l);
if(mark1==0)
{
printf("\nDo you want to modify it?\n");
getchar();
scanf("%c",&ch);
if(ch=='y');
{
printf("\nInput the number of the train:");
scanf("%s",findmess);
p=Locate1(l,findmess,"num");
if(p)
{
printf("Input new number of train:");
scanf("%s",&p->data.num);
printf("Input new city the train will reach:");
scanf("%s",&p->data.city);
printf("Input new time the train take off");
scanf("%s",&p->data.takeoffTime);
printf("Input new time the train reach:");
scanf("%s",&p->data.receiveTime);
printf("Input new price of the ticket::");
scanf("%d",&p->data.price);
printf("Input new number of people who have booked ticket:");
scanf("%d",&p->data.bookNum);
printf("\nmodifying record is sucessful!\n");
shoudsave=1 ;
}
else
printf("\t\t\tcan't find the record!");
}
}
else
mark1=0 ;
}
}
/*系统给用户的提示信息*/
void AdvicedTrains(Link l)
{
Node*r ;
char str[10];
int mar=0 ;
r=l->next ;
printf("Iuput the city you want to go: ");
scanf("%s",str);
while(r)
{
if(strcmp(r->data.city,str)==0&&r->data.bookNum<200)
{
mar=1 ;
printf("\nyou can select the following train!\n");
printf("\n\nplease select the fourth operation to book the ticket!\n");
printTrainInfo(r);
}
r=r->next ;
}
if(mar==0)
printf("\n\t\t\tyou can't book any ticket now!\n");

}
/*保存火车信息*/
void SaveTrainInfo(Link l)
{
FILE*fp ;
Node*p ;
int count=0,flag=1 ;
fp=fopen("c:\\train.txt","wb");
if(fp==NULL)
{
printf("the file can't be opened!");
return ;
}
p=l->next ;
while(p)
{
if(fwrite(p,sizeof(Node),1,fp)==1)
{
p=p->next ;
count++;
}
else
{
flag=0 ;
break ;
}
}
if(flag)
{
printf("the number of the record which have been saved is %d\n",count);
shoudsave=0 ;
}
fclose(fp);
}
/*保存订票人的信息*/
void SaveBookmanInfo(bookManLink k)
{
FILE*fp ;
bookMan*p ;
int count=0,flag=1 ;
fp=fopen("c:\\man.txt","wb");
if(fp==NULL)
{
printf("the file can't be opened!");
return ;
}
p=k->next ;
while(p)
{
if(fwrite(p,sizeof(bookMan),1,fp)==1)
{
p=p->next ;
count++;
}
else
{
flag=0 ;
break ;
}
}
if(flag)
{
printf("the number of the record which have been saved is %d\n",count);
shoudsave=0 ;
}
fclose(fp);
}

int main()
{
FILE*fp1,*fp2 ;
Node*p,*r ;
char ch1,ch2 ;
Link l ;
bookManLink k ;
bookMan*t,*h ;
int sel ;
l=(Node*)malloc(sizeof(Node));
l->next=NULL ;
r=l ;
k=(bookMan*)malloc(sizeof(bookMan));
k->next=NULL ;
h=k ;
fp1=fopen("c:\\train.txt","ab+");
if((fp1==NULL))
{
printf("can't open the file!");
return 0 ;
}
while(!feof(fp1))
{
p=(Node*)malloc(sizeof(Node));
if(fread(p,sizeof(Node),1,fp1)==1)
{
p->next=NULL ;
r->next=p ;
r=p ;
count1++;
}
}
fclose(fp1);
fp2=fopen("c:\\man.txt","ab+");
if((fp2==NULL))
{
printf("can't open the file!");
return 0 ;
}

while(!feof(fp2))
{
t=(bookMan*)malloc(sizeof(bookMan));
if(fread(t,sizeof(bookMan),1,fp2)==1)
{
t->next=NULL ;
h->next=t ;
h=t ;
count2++;
}
}
fclose(fp2);
while(1)
{
clrscr();
printInterface();
printf("please choose the operation: ");
scanf("%d",&sel);
clrscr();
if(sel==8)
{
if(shoudsave==1)
{
getchar();
printf("\nthe file have been changed!do you want to save it(y/n)?\n");
scanf("%c",&ch1);
if(ch1=='y'||ch1=='Y')
{
SaveBookmanInfo(k);
SaveTrainInfo(l);
}
}
printf("\nThank you!!You are welcome too\n");
break ;

}
switch(sel)
{
case 1 :
InsertTraininfo(l);break ;
case 2 :
QueryTrain(l);break ;
case 3 :
BookTicket(l,k);break ;
case 4 :
UpdateInfo(l);break ;
case 5 :
AdvicedTrains(l);break ;
case 6 :
SaveTrainInfo(l);SaveBookmanInfo(k);break ;
case 7 :
return 0;
}
printf("\nplease press any key to continue.......");
getch();
}
return 0;
}