Three-dimensional array decomposition of C language

Many people learn C, it is difficult to imagine three-dimensional array, and do not understand what depth is? Made a diagram to help you break it down

such as int a[3][3][3]={{1,2,3},

{4,5,6},

{7,8,9}};

The first 3 represents the depth, also called the number of layers, which is the z axis in the graph, the second 3 represents the number of rows (the x-axis in the figure), and the third 3 represents the column (the y-axis in the figure); that is, three layers, three rows, three columns. It is important to note that x, y changes from different faces (angles), but depth Z has not changed and is downward.

Three-dimensional array decomposition of C language