5.1 Solutions

1. 6.94
2. 10.81
3. atomicMass(2)
4. atomicMass(1)
5. 1, 2, 3, 4, 5
6. int
7. real
1. 'S'
2. cipher('B')
3. cipher('D')
4. 'Z'
5. 'Z'
6. 'I'
7. char
8. char
1. 11 [to calculate: 1990 - 1980 + 1 = 11]
  last index - first index + 1
  if you actually count them all you'll get 11
2. 21 [10 - (-10) + 1 = 21]
3. 8 [count as you say the alphabet]
4. 11 [5 - (-5) + 1 = 11]
5. 2

Since we don't know all the values in (a) and (b) we'll just create the arrays. For (c) we'll also initialize

```
var temperature : array 0 .. 12 of int 
```
```
var mark : array 1 .. 10 of int 
```

var quantity : array 'A' .. 'D' of int := init(240, 185, 210, 375)

- b is illegal because there is a quote missing after the p and also because it should be 'k' .. 'p' (smaller value must go first for the index)
- d is illegal because the types of the index are mismatched. You need two chars or two ints. Can't go 1 .. 'J'.
- e is illegal because you can't do a calculation with a char ('J' - 1)
- f is illegal because the index can't be real (1e1 = 1 x 10¹ = 10.0, e notation is always real)
- g is illegal because the word init is missing. It should be:
  var g : array 1 .. 5 of int := init(1, 2, 3, 4, 5)
- i is illegal because there are only 3 values inside init and there are 4 elements in the array