C语言单链表实现行李信息查询系统

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

#define OK 1

typedef char Status;

typedef struct SqNode{ Status num[4], flight[7], name[5], ID[19], state[4]; struct SqNode *next; } LNode, *LinkList;

int InitList(LinkList &L) { L=(LinkList)malloc(sizeof(LNode)); L->next=NULL; return OK; }

int creatList(LinkList &Q) { Q->next = (LinkList)malloc(sizeof(LNode)); strcpy(Q->next->num, '001'); strcpy(Q->next->flight, 'UC8866'); strcpy(Q->next->name, '张里'); strcpy(Q->next->ID, '510199909090002'); strcpy(Q->next->state, '到达');

Q = Q->next;
Q->next = (LinkList)malloc(sizeof(LNode));
strcpy(Q->next->num, '002');
strcpy(Q->next->flight, 'NI7755');
strcpy(Q->next->name, '李丽');
strcpy(Q->next->ID, '510200012290001');
strcpy(Q->next->state, '已取');

Q = Q->next;
Q->next = (LinkList)malloc(sizeof(LNode));
strcpy(Q->next->num, '003');
strcpy(Q->next->flight, 'MQ9090');
strcpy(Q->next->name, '王一');
strcpy(Q->next->ID, '510198810090003');
strcpy(Q->next->state, '未取');

Q = Q->next;
Q->next = (LinkList)malloc(sizeof(LNode));
strcpy(Q->next->num, '004');
strcpy(Q->next->flight, 'BU8080');
strcpy(Q->next->name, '赵山');
strcpy(Q->next->ID, '610197708080022');
strcpy(Q->next->state, '未到达');

Q->next = NULL; 
return OK;

}

char *seekList(LinkList L, char a[]) { while(L->next != NULL) { if(strcmp(L->next->ID, a) == 0) return L->next->state; else L = L->next; }
return 'NULL'; }

int main() { char c[19]; LinkList L; InitList(L); creatList(L); printf('欢迎光临\n请输入身份证查找行李信息\n'); scanf('%s', c); char *d = seekList(L, c); if(strcmp(d, 'NULL') == 0) printf('查无此人\n'); else printf('%s', d); return 0; }