数据结构查找操作

#include<stdio.h>
#include<stdlib.h>
#define    OK          1
#define    ERROR       0
#define    OVERFLOW   -2
#define    LIST_INIT_SIZE   100
#define    LISTINCREMENT    10
typedef struct
{
int  key;
}SelemType;
typedef  struct
{
    SelemType *elem;
int length;
int listsize;
}SqList;


int menu_select(int number)
{
do
{
system("cls");
printf("\t\t\t******* menu  select ********\n");
printf("\t\t\t 1.建立顺序表并初始化\n");
printf("\t\t\t 2.对顺序表进行折半查找\n");
printf("\t\t\t 3.对顺序表进行顺序查找\n");
printf("\t\t\t 4.退出\n");
printf("\t\t\t*****************************\n");