程序代码：

//最简单的创建多线程实例   
#include <stdio.h>   
#include <windows.h>   
//子线程函数 A  
DWORD WINAPI ThreadFunA(LPVOID pM)  
{  
    printf("子线程A的线程ID号为：%d\n子线程A输出Hello World\n", GetCurrentThreadId());  
    return 0;  
} 
//子线程函数 B
DWORD WINAPI ThreadFunB(LPVOID pM)  
{  
    printf("子线程B的线程ID号为：%d\n子线程B输出Hello World\n", GetCurrentThreadId());  
    return 0;  
} 
//主函数，所谓主函数其实就是主线程执行的函数。   
int main()  
{  
    printf("最简单的创建多线程实例\n");  
  
    HANDLE handleA = CreateThread(NULL, 0, ThreadFunA, NULL, 0, NULL);  
    WaitForSingleObject(handleA, INFINITE);  
    HANDLE handleB = CreateThread(NULL, 0, ThreadFunB, NULL, 0, NULL);  
    WaitForSingleObject(handleB, INFINITE);  
    system("pause");  
}