On the p+1 of two-dimensional array in C language and the opinion of p+1

I first published in 51CTO blog, there may be some mistakes, I hope that the great God more guidance! All right, gossip, let's go to the subject:

In the C language, there are many data types (Int, Float, Char ...), then the array is a constructed type of data that the individual considers an array to be a set of data with the same data type. Currently, our common array is one-dimensional, two-dimensional arrays. This article takes two-dimensional array as the problem, first of all, we look at a piece of code!

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Through the code, we know * (p+1), the value of p+1 is the same, but the meaning is different, first say p+1, whether it is a one-dimensional or two-dimensional array, the array name can be a table two meanings: 1, a pointer to its starting element (A[0]), 2, to represent the memory of itself (sizeof (a)) This article mainly with the first layer meaning, the two-dimensional array name A,a represents the address of the first element in a two-dimensional array a[0], that is, &a[0], instead of the address of the array itself, the address of the array itself is represented by (&a). Because, there is an int (*p) [3]=a; Note that this array pointer points to the first element in a two-dimensional array (a[0], which is pointed to, then p+1, which points to the a[1] array, (P is of type int (*) [3]), So, * (p+1) is p+ 1 point to the content of the space, then, what is this content? In a two-dimensional array, the result of the operation is a one-dimensional array, then can represent the whole array of only the array name, the one-dimensional array name represents the first address of its first element, and does not represent the address of a one-dimensional array, that is, &a[1][0], then * (p+1) =&a[1][0];

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Through, the code can see that the inference is correct. So if we want to take the values in the two-dimensional array, we can do the "*" Operation again, that is, * (* (p+1)) that is * (&a[1][0]), as shown in the code!

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This is my personal humble opinion, if there is wrong, please the great God pointing twos.

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On the p+1 of two-dimensional array in C language and the opinion of p+1