如何给线程函数 beginthread 和 pthread_create 传递参数

1. 传递单个参数：直接传递指向参数的指针。

/*----------------------- beginthread.c ----------------------------*/#include <process.h> void doubleNum(void* arg) { 

int *arg=(int*)arg;

*arg=(*arg)*2;

} void main() { int arg = 0; 

_beginthread(doubleNum,0,(void*)&arg); }

/*----------------------- pthread_create.c ----------------------------*/#include <pthread.h>void doubleNum(void* arg) { 
int *arg=(int*)arg;
*arg=(*arg)*2;
} void main() { int arg = 0; 
pthread_t thread;
pthread_create(&thread,  0, doubleNum, (void*)&arg);
pthread_join(thread, NULL);}

2. 传递多个参数：定义一个包含所有参数的结构体，传递指向结构体的指针。

/*----------------------- StructAndFunc.h ----------------------------*/

#include <stdio.h>
struct threadparam
{
int *arg1;
char[5] arg2;
}
void doubleNum(void* arg) { 
int *arg1=(threadparam*)arg->arg1;
char *arg2=(threadparam*)arg->arg2;
printf("integer: %dchar array: %s \n", *arg1, arg2);
} 

/*----------------------- beginthread.c ----------------------------*/#include <process.h> #include <StructAndFunc.h>
void main() { int integer= 5; 
char[5] array={a,b,c,d,e};
threadparam* param=new threadparam();
param->arg1=&interger;
param->arg2=array;

HANDLE m_hThread = (HANDLE)_beginthread(doubleNum,0,(void*)threadparam);
}
/*----------------------- pthread_create.c ----------------------------*/#include <pthread.h>
#include <StructAndFunc.h>
void main() { int integer= 5; 
char[5] array={a,b,c,d,e};
threadparam* param=new threadparam();
param->arg1=&interger;
param->arg2=array;
pthread_t thread;
pthread_create(&thread,  0, doubleNum, (void*)param);
pthread_join(thread, NULL);
}
ps，以上代码未进行测试，可能会存在一些语法小错误。