c++ - 将一个数组的内容复制到另一个数组会导致内存泄漏吗

Question

这段代码是否会导致内存泄漏:

int main(){

   int * a = new int[10];
   int * b  = new int[10];
   for(int i = 0 ; i < 10; i++)
   {
       a[i] = 1;
       b[i] = 1;
   }

   for(int i = 0 ; i < 10; i++)
   {
       a[i] = b[i]; //each a[i] is allocated 4 bytes on heap
                    //when we copy b[i] into a[i] do we loose 
                    //the reference to a[i] (hence a leak), 
                    //and replace that reference
                    //with a reference to a new value?
   }

   delete[] a;
   delete[] b;


}

Answer 1

不，那里没有泄漏。您只是在复制数组中的值。将阵列想象成更衣室中的两排储物柜——您只需复制一个储物柜中的内容，然后将其放入另一排储物柜中；储物柜本身留在原处。