C++ new delete
int * p1=new int;
int *p2=new int(2); //*p2初始化值是2
int *p3=new int[1000] //申请1000个单位内存空间
delete p1;
delete p2;
delete[] p3; //注意此处不能用delete p3,因为在申请用了[],则在释放时要用delete[]
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int * p1=new int;
int *p2=new int(2); //*p2初始化值是2
int *p3=new int[1000] //申请1000个单位内存空间
delete p1;
delete p2;
delete[] p3; //注意此处不能用delete p3,因为在申请用了[],则在释放时要用delete[]