我想请问一下为什么我运行这个程序没有结果直接退出??
# include<unistd.h>
# include<signal.h>
# include<stdio.h>
int pid1,pid2;
int main(void)
{
int fd[2];
char OutPipe[100],InPipe[100];
pipe(fd);
while((pid1=fork())= = -1);
if(pid1= =0)
{
lockf(fd[1],1,0);
sprintf(OutPipe,“child 1 process is sending message!”);
write(fd[1],OutPipe,50);
sleep(5);
lockf(fd[1],0,0);
exit(0);
}else{
while((pid2=fork())= = -1);
if(pid2= =0)
{
lockf(fd[1],1,0);
sprintf(OutPipe,“child 2 process is sending message!”);
write(fd[1],OutPipe,50);
sleep(5);
lockf(fd[1],0,0);
exit(0);
}else{
wait(0);
read(fd[0],InPipe,50);
printf(“%s\n”,InPipe);
wait(0);
read(fd[0],InPipe,50);
printf(“%s\n”,InPipe);
exit(0);
}
}
}