In a 2D array,address ofA[3][2] is 1110, address ofA2][3] is1115, suppose one unit require one space, what is the address ofA[1][4]. 这应该是列优先存储把

对的，这个问题默认使用列优先存储（column-major ordering）方式。

在列优先存储的方式下，数组在内存中的存储顺序是按列存储的，即先存储第一列的所有元素，再存储第二列的所有元素，以此类推。因此，在这种情况下，数组元素的地址是按列优先顺序逐个递增的。

根据题目中的信息，`A[3][2]` 的地址是 `1110`，`A[2][3]` 的地址是 `1115`。由于每个元素占用一个单位的空间，我们可以计算出 `A[3][2]` 到 `A[2][3]` 之间有 `3` 个单位的距离。

因此，`A[1][4]` 距离 `A[3][2]` 的距离是 `3 + 2 = 5` 个单位。由于每个单位占用一个字节的空间，所以 `A[1][4]` 的地址应该是 `1110 + 5 = 1115`。

相关问题

IndexError: too many indices for array: array is 2-dimensional, but 3 were indexed

This error message indicates that you are trying to access an element in a NumPy array using too many indices.

For example, suppose you have a 2-dimensional array (matrix) with shape (3, 3), and you try to access an element using three indices like this:

import numpy as np

arr = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
elem = arr[1, 2, 0]  # this will raise an IndexError

In this case, the `arr[1, 2, 0]` statement is trying to access an element at row 1, column 2, and depth 0 (which doesn't exist because the array is only 2-dimensional).

To fix this error, make sure you are using the correct number of indices for your array. For a 2-dimensional array, you should only use two indices (one for the row and one for the column).

what is the usage of call in makefile?

In a Makefile, the call function is used to invoke a macro with arguments. It allows you to define a macro with parameters and then call that macro with different arguments throughout the Makefile.

The syntax for using the call function is as follows:

$(call macro-name,parameter1,parameter2,...)

Here, "macro-name" is the name of the macro you want to invoke, and "parameter1", "parameter2", etc. are the parameters that you want to pass to the macro.

For example, suppose you have defined a macro called "print" that takes a single parameter and simply prints it to the console:

define print
    @echo $(1)
endef

You can then use the call function to invoke this macro with different arguments:

$(call print, "Hello, world!")
$(call print, "This is a test.")

This will output the following to the console:

Hello, world!
This is a test.