方林

摘要： 一.思维导图 二.实例讲解1.wait()#include <sys/types.h>#include <sys/wait.h>#include <unistd.h>#include <stdio.h>int main(){ pid_t pc, pr; pc = fork(); if(pc<0){ printf("fork error\n"); }else if(pc == 0){ printf("this is child process.\n"); }else{ sleep(20); printf 阅读全文

摘要： 一.先来看下思维导图，以快速认知。 二.实例讲解实例一.#include <sys/types.h>#include <unistd.h>#include <stdio.h>int main(){ pid_t pid; pid = fork(); if(pid<0){ printf("error in fork"); }else if(pid == 0){ printf("This is child process, pid is %d\n", getpid()); }else{ printf("Thi 阅读全文