2 d array doubt

what will happen if i make 2D array for 4 column and 5 row but i write the value of only 2 row and 3 column or i just overload the value for example i made 3 row and 5 column and i write the value of 10 row and 15 column?

hi @dharamrajroy_275ef8688612039e,
if you will fill less rest will be garbage value
if you will fill more that you will get index out of bound error