测验题目

Is there any problem in following code?

int *p= new int[10];
delete p;

Is there any problem of bellow code piece?

//代码1
int A() {
  int test=10;
  return test;
}
int main() {
  int a=A();
  printf("%d\n",a);
  return 0;
} 

//代码2
char* A() {
  char p[]="hello world";
  return p;
}

int main() {
  char *str=NULL;
  str=A();
  printf("%s",str);
}