#include<stdio.h>
#include<malloc.h>
#include<string.h>
#define OK 1
#define ERROR 
typedef struct airline{
    char air_num[8];
    char plan_num[8];
    char end_place[20];
    int total;
    int left;
    struct airline *next;
}airline;
typedef struct customer{
    char name[8];
    char air_num[8];
    int seat_num;
    struct customer *next;
}customer;
airline *start_air()
{
    airline *a;
    a=(airline * )malloc(sizeof(airline));
    if(a==NULL)
        printf("空间不足");
    return a;
}
customer *start_cus()
{
    customer *c;
    c=(customer * )malloc(sizeof(airline));
    if(c==NULL)
        printf("空间不足");
        return c;
}
airline *modefy_airline(airline *1, char *air_nums)
{
    airline *p;
    p=1->next;
    for(;p!=NULL;p=p->next)    
    {
        if(strcmp(air_num,p->air_num)==0)
        {
            p->left++;
            return 1;
        }
        printf("NO the airline!");
        return 0;
    }
}
int insert_air(airline **p, char *air_num, char *plane_num, char *end_place, int total, int left)
{
    airline *q;
    q=(airline * )malloc(sizeof(airline));
    strcpy(q->air_num,air_num);
    strcpy(q->plane_num,plane_num);
    strcpy(q->end_place,end_place);
    q->total=total;
    q->left=left;
    q->next=NULL;
    (*P)->next=q;
    (*p)=(*p)->next;
    return OK;
}
int insert_cus(customer **p, char *name, char *air_num, int seat_num)
{
    customer *q;
    q=(customer * )malloc(sizeof(customer));
    strcpy(q->name,name);
    strcpy(q->air_num,air_num);
    q->seat_num=seat_num;
    q->next=NULL;
    (*p)->next=q;
    (*p)=(*p)->next;
    return OK;
}
int book(airline *a, char *air_num, customer *c, char *name)
{
    airline *p=a;
    customer *q=c->next;
    p=a->next;
    for(;q->next!=NULL;q=q->next)
    for(;p->next!=NULL;p=p->next)
    {
       if(p->left>0)
       {
        printf("Your seat number is %d",(p->total-p->left+1));
        insert_cus(&q,name,air_num,p->total-p->left+1);
        p->left--;
        return OK;
       }
       else 
       {
        printf("seat is full");
        return 0;
       }
    }
}

int del_cus(customer *c, airline *1, char *name)
{
    customer *p, *pr;
    char air_num[8];
    pr=c;
    p=pr->next;
    while(p!=NULL)
    {
        if(strcmp(p->name,name)==0);
        {
            strcpy(air_num,p->air_num);
            1=modefy_airline(1,air_num);
            pr->next=p->next;
            p=pr->next;
            printf("finish!");
            return OK;
    }
        pr=pr->next;
        p=pr->next;

}
    printf("NO the customer!");
    return ERROR;
}
int search_air(airline *head)
{
    airline *p=head->next;
    printf("air_num plane_num end_num total left\n");
    for(;p!=NULL;p=p->next)
    {
        printf("%s% -10s % -8d% -8d\n",p->air_num,p->plane_num,p->end_place,p->total,p->left);
    }
return OK;
}
int search_cus(customer *head)
{
    struct customer *q=head->next;
    printf("name  air_num  seat_num\n");
    for(;q!=NULL;q=q->next)
    {
        printf("% -8s% -12s% -d\n",q->name,q->air_num,q->seat_num);
    }
return OK;
}
int creat_air(airline **1)
{
    airline *p=*1;
    int i=0;
    char *air_num[3]={"007af","008af","009af"};
    char *plane_num[3]={"plane1","plane2","plane3"};
    char *end_place[3]={"BeiJing","ShangHai","TianJin"};
    int total[3]={100,100,100};
    int left[3]={52,54,76};
    for(i=0;i<3;i++)
        insert_air(&p,air_num[i],plane_num[i],end_placel[i],total[i],left[i]);
    return OK;
}
int creat_cus(customer **1)
{
    customer *p=*1;
    int i=0;
    char *name[3]={"zhsan","lisi","wangwu"};
    char *air_num[3]={"007af","008af","009af"};
    int seat_num[3]={2,5,7};
    for(i=0;i<3;i++)
        insert_cus(&p,name[i],air_num[i],seat_num[i]);
    return OK;
}
void main()
{
    int t=1;
    customer *cus=start_cus();
    airline *air=start_air();
    char name[8],air_num[8],ch;
    creat_air(&air);
    creat_cus(&cus);
    while(t==1)
    {
        print("\n");
        printf("*************************************\n");
        printf("*       Welcome to air firm!           *\n");
        printf("*           book----------1              *\n");
        printf("*           cancle--------2             *\n");
        printf("*           search--------3             *\n");
        printf("*           exit----------4             *\n");
        printf("*************************************\n");
        ch=getch();
        if(ch=='1')
        {
            printf("Please input a airline number:");
            scanf("%s",air_num);
            printf("Please input a name:");
            scanf("%s",name);
            book(air,air_num,cus,name);
        }
        else
            if(ch=='2')
            {
                printf("Please input the cancel name:");
                scanf("%s",name);
                del_cus(cus,air,name);
            }
            else
                if(ch='3')
                {
                    search_air(air);
                    printf("\n");
                    search_cus(cus);
                }
                else
                    if(ch=='4')
                    {
                        t=0;
                    }
    }
}
        }
    }
错误提示是：
    --------------------Configuration: 航空客运订票系统 - Win32 Debug--------------------
Compiling...
航空客运订票系统.cpp
E:\VC98\航空客运订票系统.cpp(36) : error C2143: syntax error : missing ')' before 'constant'
E:\VC98\航空客运订票系统.cpp(36) : error C2143: syntax error : missing ';' before 'constant'
E:\VC98\航空客运订票系统.cpp(36) : fatal error C1004: unexpected end of file found
Error executing cl.exe.

航空客运订票系统.obj - 3 error(s), 0 warning(s)
麻烦各位帮忙看看，非常感谢！！