Accessing Union Members | ShreeSanaviAcademy Portal for Students

Introduction Generations of Computers Classification of Computers Basic Anatomy of a Computer System Memory Management Computer Software Operating System

Algorithm Flowcharts

Programming Language Generations of Programming Languages Introduction to C Structure of C Programming Language Integrated Development Environment First C program, Hello World Executing a C Program Constants in C Variables in C C Storage Classes and Storage Class Specifiers

Introduction Arithmetic operators Relational Operators Logical Operators Assignment Operator Increment and Decrement Operators Conditional Operators Bitwise Operators Precedence and Associativity

Control Instructions in C if Statement in C if-else Statement Nested if-else statement else if ladder Switch Statements in C

Loops Introduction for Loop while loop in C do-while Loop break and continue statements

Array in C One Dimensional array Two Dimensional Array Multidimensional Arrays

Modular Programming Functions

Searching Techniques Linear Search Algorithm Binary-Search-Algorithm

Sorting Introduction Bubble Sort

What is Strings Standard Library String Functions

Structure Introduction Defining a Structure Declaration of Structure Example of Structure Union Introduction Defining a Union Accessing Union Members

Pointers in C Accessing the Address of a variable Pointer Operations

Dynamic Memory Allocation

Accessing Union Members

We use the member access operator (.) to go to any union member.

The member access operator is a period between the name of the union variable and the name of the union member we want to access. To define variables of the union type, you'd use the term union.

The following example demonstrates how to incorporate unions into a program:

#include <stdio.h>
#include <string.h>
 
union Uni {
   int i;
   float f;
   char str[20];
};
 
int main( ) {
   union Uni data1;        
   data1.i = 20;
   printf( "data.i : %d\n", data1.i);
   
   data1.f = 10.5;
   printf( "data.f : %f\n", data1.f);
   
      strcpy( data1.str, "C Language");
   printf( "data.str : %s\n", data1.str);
   
   return 0;
}

Output:

data1.i : 20
data1.f : 10.500000
data1.str : C Language

--------------------------------
Process exited after 1.06 seconds with return value 0
Press any key to continue . . .

Fundamentals of the Computer System

Introduction to Algorithm

Programming Basics

Operators in C

Conditional Branching

Iteration and Loops

Array in C

Functions in C

Searching Algorithms

Sorting Algorithms

Strings

Structures and Union

Pointers in C

File Handling in C

Advanced

Output: