小编Wei*_*ong的帖子

比较两个代码如下:

  1 #include <new>
  2 #include <cstdio>
  3 class CA
  4 {
  5 public:
  6     int i, j, k;
  7 };  
  8 
  9 int main()
 10 {
 11     int aa[4] = { 1, 2, 3, 4 };
 12     CA *i = new(aa) CA();
 13     printf("%d %d %d %d\n", aa[0], aa[1], aa[2], aa[3]);
 14     return 0;
 15 }   

  1 #include <new>
  2 #include <cstdio>
  3 class CA
  4 {
  5 public:
  6     int i, j, k;
  7 };  
  8 
  9 int …