UGC NET Computer Science July 2018 - II | Question 4

Question 4

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4. What is the output of the following ‘C’ program ?
(Assuming little - endian representation of multi-byte data in which Least Significant Byte (LSB) is stored at the lowest memory address.)

#include <stdio.h>
#include <stdlib.h>
/* Assume short int occupies two bytes of storage */
int main ( )
{
         union saving
         {
         short int one;
         char two[2];
         };
         union saving m;
         m.two [0] = 5;
         m.two [1] = 2;
         printf(’’%d, %d, %d\n”, m.two [0], m.two [1], m.one);
}/* end of main */

Options:

1. (1) 5, 2, 1282
2. (2) 5, 2, 52
3. (3) 5, 2, 25
4. (4) 5, 2, 517

Answer : (4) 5, 2, 517

Explanation Question 4

A union is a special data type available in C that allows to store different data types in the same memory location. You can define a union with many members, but only one member can contain a value at any given time. Unions provide an efficient way of using the same memory location for multiple-purpose.

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UGC-NET CS 2018 July - II Question 3	UGC NET CS 2018 July - II Question 5