> 1. We discussed using the expression `sizeof(a) / sizeof(a[0]` to calculate the number of elements in an array. The expression `sizeof(a) / sizeof(t)` where `t` is the type of `a`'s elements would also work, but it's considered an inferior technique. Why?

> 3. Write a declaration of an array named weekend containing seven `bool` values. Include an initialize that makes the first and last values `true`; all other values should be `false`.

> 6. Calculators, watches, and other electronic devices often rely on 7 segment displays for numerical output. To form a digit, such devices turn on some of the seven segments while leaving others off.
> 
>    Here's what the array might look like, with each row representing one digit:
```
const int segments[10][7] = {{1, 1, 1, 1, 1, 1, 0}, ...};
```
> I've given you the first row of the initializer, fill in the rest. 

> 	1. Write a declaration for an 8x8 `char` array named `chess_board`. Include an initializer that puts the follwoing data into the array, one char