【C】——如何用线程进行参数的传递
直接上代码：
1 #include<pthread.h> 2 #include<stdio.h> 3 4 struct val{ 5 int num1; 6 int num2; 7 }; 8 9 //send a int to arg 10 void *text(void *arg) 11 { 12 int *p = (int *)arg; 13 printf("arg is %d\n",*p); 14 pthread_exit(NULL); 15 } 16 17 //send char to arg 18 void *text2(void *arg) 19 { 20 char *d = (char *)arg; 21 printf("arg is %s\n",arg); 22 pthread_exit(NULL); 23 } 24 25 //send a struct to arg 26 void *text3(void *arg) 27 { 28 struct val *v = (struct val *)arg; 29 printf("arg is v.num1:%d,v.num2:%d\n",v->num1,v->num2); 30 pthread_exit(NULL); 31 } 32 33 int main() 34 { 35 pthread_t pth; 36 char val[10] = "i am arg."; 37 int arry = 10; 38 pthread_create(&pth, NULL, text,(void *)&arry); 39 pthread_join(pth, NULL); 40 41 pthread_create(&pth, NULL, text2, (void *)val); 42 pthread_join(pth, NULL); 43 44 struct val v; 45 v.num1 = 0; 46 v.num2 = 1; 47 pthread_create(&pth, NULL, text3, (void *)&v); //一定要用&v因为结构体是值类型； 48 pthread_join(pth, NULL); 49 50 return 0; 51 }
结果如下：
每次传递的时候，都需要转化成void，接收之后，再由void转换成自己需要的类型！
