C++动态内存分配

C++动态内存分配
C语言：malloc()/free()
C++中：new/delete 运算符
new运算符用于动态内存的分配，delete运算符用于动态内存的释放。
C语言:
      int *p = (int*)malloc(sizeof(int));
      *p = 100;
      free(p);
C++:
      int *p = new int(200);
      //*p = 200;
      delete  p;
 
     int* pa = new int[10];
     pa[0] = 10;
     pa[1] = 20;
     ....
     delete[] pa;