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Questions and Answers
What does a structure in C allow you to do?
What keyword is used to define a structure in C?
struct
The closing curly brace in the structure type declaration must be followed by a _____.
semicolon
A structure in C can hold only one type of data.
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Which of the following is a correct syntax to declare a structure in C?
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How do you access a member of a structure?
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What type of data can a structure member be?
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What function can be used to assign a string value to a structure member?
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An array of structures is also known as a collection of _____.
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You can declare structure variables both during and after structure definition.
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Study Notes
C Structures
- Structures are user-defined data types that allow for combining data of different types.
- Similar to arrays, but structures can store various data types, while arrays only store data of the same type.
- Useful for organizing complex data, such as student information which includes strings, integers, etc.
- Data in structures is stored in records.
Defining a Structure
- The keyword
structis used to define a structure, creating a new data type. - The structure can be given an optional name (a tag).
- Inside curly braces
{}, declare member variables, which are regular C variables of different types (e.g.,int,float, arrays). - After the closing curly brace, you can optionally declare one or more structure variables.
- The closing curly brace of the structure type declaration must be followed by a semicolon.
Declaring Structure Variables
- Declare variables of a structure either during the structure definition or separately.
- Declaration is similar to declaring variables of any other data type.
Accessing Structure Members
- Structure members are accessed using the dot operator (
.) or member access operator. -
s1.age = 18;assigns the value 18 to theagemember of the structures1. -
strcpy(s1.name, "Viraj");copies the string "Viraj" into thenamemember of the structures1. -
printf("Name of Student 1: %s\n", s1.name);prints thenamemember of the structures1.
Input Using scanf()
- Use
scanf()to input values into structure members directly from the terminal. -
scanf(" %s ", s1.name);assigns the input string to thenamemember of the structures1. -
scanf(" %d ", &s1.age);assigns the input integer to theagemember of the structures1.
Array of Structures
- An array of structures is a collection of multiple structure variables, each containing information about distinct entities.
- Used for storing data about multiple entities with different data types.
struct student{
int rollno;
char name;
};
Array of Structures Syntax
-
struct structurename objectname[size];defines an array of structures. -
objectnamerefers to the array of structures, andsizedetermines the number of structure variables in the array.
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Description
This quiz covers the fundamentals of structures in C programming. Learn how to define structures, declare structure variables, and understand their usefulness in organizing complex data. Ideal for learners wanting to enhance their understanding of data types in C.
