vault backup: 2024-11-01 13:18:59
This commit is contained in:
		| @@ -0,0 +1,20 @@ | ||||
| 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} | ||||
| ``` | ||||
| @@ -1,20 +1,8 @@ | ||||
| 1. Suppose that the following declarations are in effect:.... | ||||
| 	a. `14` | ||||
| 	b. `34` | ||||
| 	c. `4` | ||||
| 	d. `true` | ||||
| 	e. `false` | ||||
| > 1. If `i` is a variable and `p` points to `i`, which of the following expressions are aliases for `i`? | ||||
|  | ||||
| 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; | ||||
| ``` | ||||
| a. `*p` | ||||
| g. `*&i` | ||||
|  | ||||
| 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} | ||||
| ``` | ||||
| > 2. If `i` is an `int` variable and `p` and `q` are pointers to `int`, which of the following assignments are legal? | ||||
|  | ||||
| a.  | ||||
		Reference in New Issue
	
	Block a user
	 zleyyij
					zleyyij