c - fork-父子程序

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#include "stdafx.h"
#include<sys/types.h>
#include<stdio.h
#include<unistd.h>
int value=5;
int _tmain(int argc, _TCHAR* argv[]){
pid_t pid;
pid=fork();
if(pid==0)
{
value+=15;
}
else if(pid>0)
{
wait(NULL);
printf("Parent value:=%d",value);
exit(0);
}
return 0;
}

该程序的输出是什么？
父级的值可以为20，否则子级可以通过其自身的变量“值”的副本获得

最佳答案

父级将拥有自己的变量“值”的副本，因此输出为5


  您是否尝试执行以上代码？