Union in C
Union :-
Union in C/c++ is predefine data type
- Capable of grouping different types data items in a single unit.
- The union variable is allocated a common memory equal to the memory size required by the maximum sized data member.
- All members share the same common memory but one at a time .
- Union are used to efficiently use the memory.
if int = 2 byte , char = 1 bytes , float =4 bytes for the 16 bits architecture
example of union in c:-
/* WAP to read name, id and display by using union data type*/
#include<stdio.h> union emp { char name[20]; int id; float sal; }e1; int main() { printf("Enter id of employee\n"); scanf("%d",&e1.id); printf("ID - %d\n",e1.id); printf("Enter name of employee\n"); scanf("%s",e1.name); printf("Name - %s\n",e1.name); printf("Enter salary of employee\n"); scanf("%f",&e1.sal); printf("Salary - %f\n",e1.sal); return 0; }
Output:-
Enter id of employee 12568 ID - 12568 Enter name of employee Rajnish Name - Rajnish Enter salary of employee 85568.23 Salary - 85568.226562
Union in C
Recommended Post:
- c program to convert specified days into years weeks and days
- Print Reverse Hollow Pyramid
- Update the booking ID | Wipro previous year question paper
- Pages in PDF | Wipro previous year question paper
- Sparse Matrix in data structure
- Find the location ID | Wipro previous year Coding question
- find the odd digits | Wipro Coding question
- Find the product id | Wipro Coding question
- Difference between static and dynamic memory allocation
- What is asymptotic Notation
Key points:-
- How to set limit in the floating value in python
- What is boolean data type
- How to print any character without using format specifier
- How to check that given number is power of 2 or not
- How to fix limit in double and floating numbers after dot (.) in c++
- How to print a double or floating point number in scientific notation and fixed notation
- How to take input a string in c
- How to reduce the execution time of program in c++.
Cracking the coding interview:-
Array and string:-
Tree and graph:-
Hackerearth Problems:-
- Very Cool numbers | Hacker earth solution
- Vowel Recognition | Hackerearth practice problem solution
- Birthday party | Hacker earth solution
- Most frequent | hacker earth problem solution
- program to find symetric difference of two sets
- cost of balloons | Hacker earth problem solution
- Chacha o chacha | hacker earth problem solution
- jadu and dna | hacker earth solution
- Bricks game | hacker earth problem
- Anti-Palindrome strings | hacker earth solution
- connected components in the graph | hacker earth data structure
- odd one out || hacker earth problem solution
- Minimum addition | Hackerearth Practice problem
- The magical mountain | Hackerearth Practice problem
- The first overtake | Hackerearth Practice problem
Hackerrank Problems:-
- Playing With Characters | Hackerrank practice problem solution
- Sum and Difference of Two Numbers | hackerrank practice problem solution
- Functions in C | hackerrank practice problem solution
- Pointers in C | hackerrank practice problem solution
- Conditional Statements in C | Hackerrank practice problem solution
- For Loop in C | hackerrank practice problem solution
- Sum of Digits of a Five Digit Number | hackerrank practice problem solution
- 1D Arrays in C | hackerrank practice problem solution
- Array Reversal | hackerrank practice problem solution
- Printing Tokens | hackerrank practice problem solution
- Digit Frequency | hackerrank practice problem solution
- Calculate the Nth term | hackerrank practice problem solution
Data structure:-
- Program to find cycle in the graph
- Implementation of singly link list
- Implementation of queue by using link list
- Algorithm of quick sort
- stack by using link list
- program to find preorder post order and inorder of the binary search tree
- Minimum weight of spanning tree
- Preorder, inorder and post order traversal of the tree
Must check this:-
MCQs:-