Array Initialisation

int  an_array[ ]  =  {1,  2,  3};
Declares an array of size 3 called an_array
Initialises it to contain 1, 2, 3
int  an_array[5]  =  {1,  2,  3};
Declares an array of size 5
Initialises it to contain 1, 2, 3, 0, 0