[轉](阿里筆試）使用多線程和sleep函數生成字符串的僞隨機排列

http://blog.csdn.net/jiaowopan/article/details/12009079

 

 C/C++（Linux平臺）

 

注意編譯鏈接時須要連接pthread庫，即g++ XX.cpp -o XX -lpthread

 

#include <stdio.h>
#include <unistd.h>
#include <pthread.h>

void* thread(void* v)
{
    char ch = *(char*)v;
    sleep(1);
    putchar(ch);
}

int main()
{
    pthread_t id[7];
    int i ,ret;
    char str[] = "abcdefg";
    for(i = 0; i < 7; ++i)
    {
        ret = pthread_create(&id[i],NULL,thread,&str[i]);
        if(0 != ret)
        {
            printf("create pthread error\n");
            i--;
        }
    }
    for(i = 0; i < 7; ++i)
        pthread_join(id[i],NULL);
    printf("\n");
    return 0;


}