Notes on using VC ++ dynamic arrays as parameters

In the past, I used to return the first address. For example, my program will return a ten-day array, but the month is dynamic:
Int * cjustwatersatisfyrate: fun_getxun_array (coledatetime begin_time, coledatetime end_time ){
... // Determine the array size n Based on begin_time and end_time
Int * xun_array = new int [N]; [2] // This function is intended to be deleted from the next function. However, this function must return its first address, which obviously cannot be deleted.
... // Assign values to the xun_array
Return xun_array;
}
When using
Cjustwatersatisfyrate WSR;
Int * xun_array = new int [N]; [1]
Xun_array = WSR. fun_getxun_array (begin_time, end_time); // you want to assign a value to the first address.
For (INT I = 0; I <n; I ++)
... // Use xun_array [I] for other operations
[Color = # ff0000] Delete xun_array;
Xun_array = NULL; [/color]
The program can run, but the problem occurs. The release at [1] cannot be lost, and the red part is released, not [1], but [2]. I thought about it for a long time, later I thought that there was a problem with the assignment of the first address. It was equal to opening up two pieces of memory space. When I released the space, I only released the space at [2, and [1] This place is not moving.
It seems that the release is [1]. Actually it is not. Later I changed the function and used the reference method.
Void cjustwatersatisfyrate: fun_getxun_array (coledatetime begin_time, coledatetime end_time, int * xun_array )){
... // Determine the array size n Based on begin_time and end_time
// This sentence is deleted. int * xun_array = new int [N]; [2] // This function is intended to be deleted in the next function, but this function must return its first address, which obviously cannot be deleted.
... // Assign values to the xun_array
// Return xun_array is deleted;
}
It also changed when used:
Int * xun_array = new int [N]; // a ten-day Array
WSR. fun_getxun_array (begin_time, end_time, xun_array); // reference
In this way, the two memory blocks are merged and deleted successfully.