How to initialize a 3-dimensional array [duplicate]

Answer 1

It is complaining because you said that your inner most array is only supposed to have a single element, yet you are giving it many.

int a[3][2][1] =                                                        
{                                                                       
    {                                                                   
        {1},                                                            
        {2}                                                             
    },                                                                  
    {                                                                   
        {3},                                                            
        {4}                                                             
    },                                                                  
    {                                                                   
        {5},                                                            
        {6}                                                             
    }                                                                   
}; 

If you want more inner elements, change your 1 to something else.