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education/software development/ECE1400/Chapter 11 Exercises.md
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@ -9,7 +9,12 @@
```c ```c
middle = (low + high) / 2 middle = (low + high) / 2
``` ```
The above statement is illegal because you can't add an `int *` to an `int *`. It can be made legal by casting `low` and `high` to numbers, performing the operation, then casting to a pointer. 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 ```c
middle = (int*) (((long) low + (long) high) / 2); middle = low + (high - low) / 2;
```
3. What will be the contents of the `a` array after the following statements are executed?
```c
{1}
``` ```