myfork.c

关于进程间通信的代码集锦

#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>

int main(void)
{
	pid_t result;
	result=fork();
	switch(result)
	{
		case -1:
		printf("error!\n");
		break;
		case 0:
		printf("In child process!\nThe return value is %d.\nMy pid is %d.\n",result,getpid());
		break;
		default:
		printf("In parent process!\nThe return value is %d.\nMy pid is %d.\n",result,getpid());
		break;
	}
	return 0;
}