fork_1.c

工ARM＿LINUX的几个源代码

/*fork two child progress*/
#include<unistd.h>
#include<stdio.h>
#include<stdlib.h>
int main()
 {
pid_t child;
pid_t child1;
  child=fork();
if (child==0){
   printf("this is child progress 1....child1 pn is %dparent pn is %d\n",getpid(),getppid());}
if (child>0){
   printf("this is parent progress 1.... pn is %d\n",getpid());
   child1=fork();
   if (child1==0){
   printf("this is child progress 2....child2 pn is %dparent pn is %d\n",getpid(),getppid());}
   }

}