题目内容：

char point(char*p) {p+=3;return *P} main() {char b[4]={'a','b','c','d'},*p=b; point(p);printf("c\n"
char point(char*p)
{p+=3;return *P}
main()
{char b[4]={'a','b','c','d'},*p=b;
point(p);printf("c\n",*p）；
}
求输出结果,