Warning: missing braces around initializer

Warning: missing braces around initialize means you are not using inner braces in a multidimensional array

Let’s see an example

For instant, 2D array initialization without using inner braces

int array[4][2]={1,2,3,4,5,6,7,8};

As can be seen, from the above 2D array initialization that it is initialized without using inner braces because of that the compiler throws a warning

At this time, 2D array initialization by using inner braces

int array[4][2]={
    {1,2},
    {3,4},
    {5,6},
    {7,8}
    };

In the same way, 3D array initialization without using inner braces

int array_3d[2][3][2] = {0,1,2,3,4,5,6,7,8,9,0,11};

As I have said, when you don’t use inner braces during 3D array initialization then at that instant, the compiler will throw a warning  

3D array initialization by using inner braces

    // initializing the 3-dimensional array
    int array_3d[2][3][2] = {
        {
         { 0, 1 },
         { 2, 3 },
         { 4, 5 }
         },
        {
         { 6, 7 },
         { 8, 9 },
         { 10, 11 }
         }
         };