求《LINUXC编程一站式学习》全文免费下载百度网盘资源,谢谢~

《LINUX C编程一站式学习》百度网盘pdf最新全集下载:

链接：https://pan.baidu.com/s/1wIgN0sfCc9gjkgPdARtUng

?pwd=4jut 提取码：4jut

简介：通俗易懂的原理剖析，有非常适合初学者的code，有形象化的展示。本书分为两部分：第一部分讲解编程语言和程序设计的基本思想方法，让读者从概念上认识C语言。  

#include<stdio.h>

main()

{int p1,p2

printf("in parent when no child\n")

system("ps -af")

while ((p1=fork())==-1)

if(p1==0)

{printf("hello I am the first child!\n")

printf("in child1:pid:%d,ppid:%d\n",getpid(),getppid())

system("ps -af")}

else

{printf("in parent when one child:\n")

system("ps -af")

while((p2=fork())==-1)

if(p2==0)

{printf("hello I am the second child!\n")

printf("in child2:pid:%d,ppid:%d\n",getpid(),getppid())

system("ps -af")

}

else{printf("hello I am the parent!\n")

printf("in parent when two chileren: pid:%d,ppid:%d\n",getpid(),getppid())

}

}

}

还给你一个

#include<fcntl.h>

#include<stdlib.h>

#include<string.h>

#include<stdio.h>

int fatal(const char* info)

{printf("error!!!\n")

exit(0)

return(0)}

int lock(int fd)

{lseek(fd,0,SEEK_SET)

if(lockf(fd,F_LOCK,0)==-1)

fatal("lockf()")

return 0

}

int unlock(int fd)

{lseek(fd,0,SEEK_SET)

if(lockf(fd,F_ULOCK,0)==-1)

fatal("unlockf()")

return 0

}

int main()

{int pid,fd

char str[80]

fd=open("tep.txt",O_CREAT,0644)

pid=fork()

switch(pid)

{

case -1:

fatal("fork fail!")

case 0:sleep(1)

lock(fd)

lseek(fd,SEEK_SET,0)

read(fd,str,sizeof(str))

unlock(fd)

printf("son %d:read str from tmpfile:%s\n",getpid(),str)

exit(0)

default:

lock(fd)

printf("parent %d:please enter a str for tmpfile(strlen<80):\n",getpid())

scanf("%s",str)

lseek(fd,SEEK_SET,0)

write(fd,str,strlen(str))

unlock(fd)

wait(0)

close(fd)

exit(0)

}

}

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