UGC Net Computer Science Paper II Dec 12 Page 2 (Solved)

UGC Net Computer Science Paper II Dec 12 Page 2 (Solved)

11. In compiler design ‘reducing the strength’ refers to
(A) reducing the range of values of input variables.
(B) code optimization using cheaper machine instructions.
(C) reducing efficiency of program.
(D) None of the above
Answer : B
Explanation :I

n compiler design , strength reduction is a compiler optimization where expensive operations are replaced with equivalent but less expensive operations. The classic example of strength reduction converts "strong" multiplications inside a loop into "weaker" additions – something that frequently occurs in array addressing.

Most of a program's execution time is typically spent in a small section of code (called a hot spot), and that code is often inside a loop that is executed over and over.

A compiler uses methods to identify loops and recognize the characteristics of register values within those loops.

12. In which addressing mode, the effective address of the operand is generated by adding a constant value to the contents of register ?
(A) Absolute
(B) Indirect
(C) Immediate
(D) Index
Answer : D

Write a program to merge two array into a single array?

Q : Write a program to merge two array into a single array?

/*     #################################

           Girfa Student Help

           Merge two Array

           Programmber : Vishal

           For more program visit : http://girfahelp.blogspot.in/p/c-language.html

       #################################

*/

#include<stdio.h>

#include<conio.h>

#define MAX 5

void main()

{

       int a1[MAX],a2[MAX],a3[MAX*2];

       int i,j;

       clrscr();

       puts("First Array Input");

       for(i=0;i<MAX;i++)

Write a program to implement union and intersection?

Q.: Write a program to implement union and intersection?

/*   ##########################

     Girfa : Student Help

     For More Program Visit : http://girfahelp.blogspot.in/p/c-language.html

     Program to implement union and intersection

     ##########################*/

#include<stdio.h>

#include<conio.h>

#define MAX 5

int check_avl(int [],int,int); /* Check a number exist in an array */

void print(int [],int); /* Print an arrar*/

void main()

{

     int ar1[MAX],ar2[MAX],uni[MAX*2],ins[MAX];

     int uni_index,int_index,flag=0,i,j;

     clrscr();

     printf("\nFirst Array Input\n");

     for(i=0;i<MAX;i++)

     {

          printf("Enter %d Position number>> ",i+1);

          scanf("%d",&ar1[i]);

     }

     printf("\nSecond Array Input\n");

     for(i=0;i<MAX;i++)

     {

          printf("Enter %d Position number>> ",i+1);

          scanf("%d",&ar2[i]);

     }

UGC Net Computer Science Paper-1 Page 1

1. The English word ‘Communication’ is derived from the words
(A) Communis and Communicare
(B) Communist and Commune
(C) Communism and Communalism
(D) Communion and Common sense