多线程切割查找

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <process.h>
#include <Windows.h>

struct findInfo
{
    int *pstart;//首地址
    int length;
    int findNum;//要查找的数据
    int id;//编号
};

int flag = 1;

void findIt(void *p)
{
    if (flag == 1)
    {

        findInfo *ps = (findInfo *)p;
        printf("
线程:%d开始查找", ps->id);
        //遍历首地址，长度10个元素
        for (int *pf = ps->pstart; pf < ps->pstart + ps->length; pf++)
        {
            if (*pf == ps->findNum)//相等
            {
                printf("
线程%d结束查找，找到数据%d地址%p", ps->id, *pf, pf);
                flag = 0;
                return;
            }
        }

        printf("
线程:%d结束查找，没有找到", ps->id);
    }
    else
    {
        printf("
其他线程已找到，结束查找");
    }
}


void main()
{
    int a[100] = { 0 };
    time_t ts;
    unsigned int data = time(&ts);
    srand(data);

    for (int i = 0; i < 100; i++)
    {
        a[i] = rand() % 100;
        printf("%4d", a[i]);
        if ((i + 1) % 10 == 0)
        {
            printf("
");
        }
    }

    int num;
    scanf("%4d", &num);
    struct findInfo info[10];//结构体数组

    for (int i = 0; i < 10; i++)
    {
        info[i].pstart = a + 10 * i;
        info[i].length = 10;
        info[i].id = i;
        info[i].findNum = num;
        HANDLE hd = (HANDLE)_beginthread(findIt, 0, &info[i]);
        WaitForSingleObject(hd, INFINITE);//线程等待，一个一个执行

    }

    system("pause");
}