C语言进程控制
1、编程写程序实现:一个进程产生子进程,
(1) 子进程每隔5秒打印出“Hello,I am child”,共打印十次,十次打印完毕后输出“child finished task”;
(2) 父进程每隔2秒钟打印“Hello,I am father”,共打印5次,5次打印完毕后输出“father finished task”;
(3) 当父进程判断子进程退出后输出“My son is gone ,so I ought to go away,too!”
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
int main(){
pid_t result;
if((result=fork(