摘要： new(mCblk) audio_track_cblk_t(); placement new 1 #include <iostream> 2 #include <stdio.h> 3 #include <malloc.h> 4 5 class Student 6 { 7 private: 8 int age; 9 int grade;10 public:11 Student(void)12 {13 age = 5;14 grade = 10;15 }... 阅读全文