Chapter 9: Problem 42

T F Pointers may be compared using the relational operators.

Short Answer

Expert verified

Answer: Yes, pointers can be compared using relational operators because these comparisons are based on the memory addresses stored in the pointers.

Step by step solution

Understand Pointers

A pointer is a variable that stores the address of another variable. It is important to know that pointers deal with memory addresses, not the values stored in those memory addresses. Example: ```c int number = 5; // A variable named 'number' holding a value of 5 int *pointer; // A pointer variable named 'pointer' pointer = &number // The pointer now stores the address of the 'number' variable ```

Understand Relational Operators

Relational operators are used to compare two values or expressions. They result in a value of true (usually represented by 1) or false (usually represented by 0). Common relational operators include: - Less than: `<` - Greater than: `>` - Less than or equal to: `<=` - Greater than or equal to: `>=` - Equal to: `==` - Not equal to: `!=` Example: ```c int a = 10; int b = 20; bool result = (a < b); // result will be 'true' because 10 is less than 20 ```

Compare Pointers Using Relational Operators

Since pointers store memory addresses (which are essentially integer values), it is indeed possible to compare pointers using relational operators. The comparison is based on the memory addresses stored in the pointers, not the values stored at those memory addresses. Example: ```c int a = 10; int b = 20; int *pointer_a = &a int *pointer_b = &b bool result = (pointer_a < pointer_b); // The result is based on comparing the memory addresses stored in 'pointer_a' and 'pointer_b' ```

Verifying the Exercise Statement

The exercise statement "Pointers may be compared using the relational operators" is true. As we saw in Step 3, pointers can indeed be compared using relational operators because these comparisons are based on the memory addresses stored in the pointers.

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T F Pointers may be compared using the relational operators.

Short Answer

Step by step solution

Understand Pointers

Understand Relational Operators

Compare Pointers Using Relational Operators

Verifying the Exercise Statement

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