求问一个问题

  int *pia=new int[3];
  pia[0]=1;
  pia[1]=2;
  pia[2]=3;
  int *p=pia;
  for(;p<pia+3;p++){
  cout<< *p<<endl;
  }
  cout<<*p<<endl;
  delete [] pia;    //delete pia

delete [] pia 和 delete pia 在用法上有什么差别吗 谢谢指教
[解决办法]
数组用delete []
单个对象用delete
[解决办法]
int* p = new int();
int* pArray = new int[10];

delete p;
delete [] pArray;