此代码是否会导致父进程成功创建两个子进程？

Question

这是我的C代码，用于从父进程创建两个子进程。 这会成功创建吗？我的电流输出为：

您在id为29509
你在子进程1，你的父母的ID是29509
您在id为29511
你是在父进程的父进程子进程2和你的父母身份证是29509

为什么在我的输出的第三行父id是不同的？

#include<stdio.h> 
    #include<unistd.h> 
    int main(){ 
      pid_t child1,child2; 
      int c,d,e; 
      child1=fork(); 
      if(child1==0){ 
        c=getppid(); 
        printf("you are in child process 1 and your parent id is %d\n",c); 

      } 
      else{ 
        child2=fork(); 
        e=getpid(); 
        printf("You are in parent process whose id is %d\n",e); 
      } 
      if(child2==0){ 
        d=getppid(); 
        printf("you are in child process 2 and your parent id is %d\n",d); 
      } 
    } 

输出是

You are in parent process whose id is 29509 
you are in child process 1 and your parent id is 29509 
You are in parent process whose id is 29511 
you are in child process 2 and your parent id is 29509 

Answer 1

之后你的第二个fork，父和老二执行 “父进程” printf。

Answer 2

e=getpid(); printf("You are in parent process whose id is %d\n",e);

这些线是由家长和孩子执行。