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Chapter 11: Problem 8

Look at the following code. structure Rectangle { int length; int width; }; Rectangle *r; Write statements that A) Dynamically allocate a Rectangle structure variable and use r to point to it. B) Assign 10 to the structure’s length member and 14 to the structure’s width member.

Short Answer

Expert verified
Answer: First, dynamically allocate a Rectangle structure variable using the "new" keyword and have "r" point to it. Second, use the pointer operator (->) to assign the values 10 and 14 to the attributes "length" and "width" respectively.

Step by step solution

01

Dynamically allocate a Rectangle structure variable

To allocate a dynamic Rectangle structure variable, use the "new" keyword. The new keyword will allocate memory for a Rectangle structure variable in the heap, and return a pointer to the newly created instance. ```cpp r = new Rectangle; ```
02

Assign values to the structure's length and width members

Use the pointer operator (->) to assign values to the length and width members of the structure pointed to by "r". ```cpp r->length = 10; r->width = 14; ```

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