回调函数案例

Posted 2021-02-16 codeworkerliming

 1 #include <stdio.h>
 2 
 3 typedef void*(*FUN)(void *) ;
 4 
 5 int test(FUN pfun, void *arg)
 6 {
 7     pfun(arg);
 8     return 0;
 9 }
10 
11 void *fun(void *arg)
12 {
13     int val = (int) arg;
14     printf("val=%d
", val);
15     return (void *)0;
16 }
17 
18 int main()
19 {
20     test(fun, (void *)100);
21     return 0;
22 }

运行结果是

val=100