Computer Programming C Laboratory: Unions C Programs

C Program to find size of union and number of bytes reserved for it

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Using Unions - C Programming

C Program to find size of union and number of bytes reserved for it.

/* C Program_to find size of union and number of bytes */

#include <stdio.h>

void main()

{

union result /* result is a union with elements */

{

int marks;

char grade;

};

struct res /* res is a structure with elements */

{

char name[15];

int age;

char sex;

char address;

int pincode;

union result perf;

}

/* Statements */

clrscr();

printf("Size of Union: %d\n",sizeof(data.perf));

printf("Size of Structure: %d\n",sizeof(data));

getch();

} /* main */

OUTPUT

Size of Union : 2

Size of Structure : 23

EXPLANATION: The above program refers to fine size of union and size of structure. The union is declared with name 'result'. The structure is declared with name 'res', within the structure the declared union 'result' is accessed through variable 'perf'. Prints the size of union ‘sizeof(data.perf)' and prints the size of structure using 'sizeof(data)' functions.

Computer Programming C Laboratory: Unions C Programs : Tag: C Programming : - C Program to find size of union and number of bytes reserved for it

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Computer Programming C Laboratory: Unions C Programs

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