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education/software development/ECE1400/(not) Chapter 11 Exercises.md Normal file
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1. Suppose that the following declarations are in effect:....
a. `14`
b. `34`
c. `4`
d. `true`
e. `false`
2. Suppose that `high`, `low`, and `middle` are all pointer variables of the same type, and the `low` and `high` point to elements of an array. Why is the following statement illegal, and how could it be fixed?
```c
middle = (low + high) / 2
```
The above statement is illegal because you can't add an `int *` to an `int *`. The below operation is legal because you can perform pointer subtraction, and because `low` is defined on the left hand side of the equation, then adding a long to a pointer is valid.
```c
middle = low + (high - low) / 2;
```
3. What will be the contents of the `a` array after the following statements are executed?
```c
{10, 9, 8, 7, 6, 5, 4, 3, 2, 1}
```

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education/software development/ECE1400/Chapter 11 Exercises.md
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1. Suppose that the following declarations are in effect:.... > 1. If `i` is a variable and `p` points to `i`, which of the following expressions are aliases for `i`?
a. `14`
b. `34`
c. `4`
d. `true`
e. `false`
2. Suppose that `high`, `low`, and `middle` are all pointer variables of the same type, and the `low` and `high` point to elements of an array. Why is the following statement illegal, and how could it be fixed? a. `*p`
```c g. `*&i`
middle = (low + high) / 2
```
The above statement is illegal because you can't add an `int *` to an `int *`. The below operation is legal because you can perform pointer subtraction, and because `low` is defined on the left hand side of the equation, then adding a long to a pointer is valid.
```c
middle = low + (high - low) / 2;
```
3. What will be the contents of the `a` array after the following statements are executed? > 2. If `i` is an `int` variable and `p` and `q` are pointers to `int`, which of the following assignments are legal?
```c
{10, 9, 8, 7, 6, 5, 4, 3, 2, 1} a.
```