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This article mainly introduces C++ two-dimensional pointers, array pointers and pointers array instance analysis of the relevant knowledge, the content is detailed and easy to understand, simple and fast operation, has a certain reference value, I believe that after reading this C++ two-dimensional pointers, array pointers and pointers array instance analysis articles will have a harvest, let's take a look at it.

1 、 C++

There is no doubt about the importance of cAccord +. For all systems and algorithms that require high performance, the core code will be written in C++. When we run through the tensorflow framework and find that time efficiency does not meet our requirements, the core logic will often consider customizing and rewriting with C++.

The essence of C++ is undoubtedly pointers, the flexibility of pointers, the creation and destruction of which are entirely under our control. When using pointers, two-dimensional pointers or array pointers are generally used. Here are some of their application scenarios.

2. Two-dimensional pointer

Two-dimensional pointer: pointer variables point to pointers, such as:

Char * * pa

Two-dimensional pointers are commonly used when the number of first and second dimensional elements is uncertain, or when the number is dynamic.

How do 2D pointers apply for heap addresses?

In general, first apply m for the first dimension:

Pa = new char* [m]

Then apply n for the second dimension in turn:

For (int item0; I

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