子进程共享父进程代码段的问题

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

int main()
{
	int     k;
	pid_t  pid;
	printf("Process ...\n");
	k = 10;
	pid = fork();
	if(pid<0)
		printf("Created failed\n");
	else if(pid==0)
	{
		printf("Child running\n");
	        printf("&=%p, k=%d\n",&k,k);	
		k++;
		printf("&=%p, k=%d\n",&k,k);
	}
	else
	{
		printf("parent running\n");
		wait(NULL);
	}
	printf("end\n");
	printf("&=%p, k=%d\n",&k,k);
	return 0;
}