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Chapter 11: Problem 13

Before a structure variable can be created, the structure must be _________.

Short Answer

Expert verified
Answer: Before a structure variable can be created, the structure must be declared. This involves providing a structure definition that specifies the data types and associated member names using the 'struct' keyword followed by the structure name and its members enclosed in curly braces, ending with a semicolon.

Step by step solution

01

Understanding Structures in C

In C programming, structures (struct) are user-defined data types that allow grouping of variables of different data types under a single name. It provides a convenient way to represent complex data structures in programs.
02

Declare a Structure

Before a structure variable can be created, the structure must be declared. This means providing a structure definition that specifies the data types and associated member names. Declaration of a structure can be done using the 'struct' keyword followed by the structure name and its members enclosed in curly braces, ending with a semicolon. For example: struct Student { int roll_no; char name[50]; float marks; };
03

Create a Structure Variable

Once the structure is declared, a structure variable can be created. This can be done by using the keyword 'struct' followed by the structure name and the variable name, like this: struct Student student1; This defines a variable 'student1' of the structure type 'Student'. With this variable, it is possible to access the individual members of the structure, such as 'student1.roll_no', 'student1.name', and 'student1.marks'.

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Most popular questions from this chapter

A pet store sells dogs, cats, birds, and hamsters. Write a declaration for an anonymous enumerated data type that can represent the types of pets the store sells.

Look at the following code. structure Rectangle int length; int width; Rectangle \(\star \mathrm{r}=\) nullptr 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.

The _________ operator allows you to access structure members.

T F In a union, all the members are stored in different memory locations.

Look at the following code. union Values int ivalue; double dvalue; Values v; Assuming that an int uses four bytes and a double uses eight bytes, how much memory does the variable v use?
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