CBSE Class 12 Computer Science Sample Paper 2015 Set 03

1. (a) Write the prototype of a function named Percent, which takes an integer as value parameter and return a float type value. The parameter should have a default value 10.

(b) Write the names of header files, which are NOT necessary to run the following  program:

#include <iostream.h>

#include <stdio.h>

#include <string.h>

#include <math.h>

void main()

{

char STR[80];

gets(STR);

puts(strrev(STR));

}

(c) Tarunaj has just started working as programmer in the JAGAT WORLD SOFTWARE company. In the company, he has got his first assignment to develop a small C++ module to find the biggest number out of a given set of numbers stored in a one dimensional array. Somehow he has committed a few logical mistakes while writing this code and so he is not getting the desired result from the code. Find out the mistakes and correct this C++ code so that it provides the desired result (do not add any new statement in the code). Underline each correction made:

int BIGFIND(int ARR[],int Size)

{

int BIG=ARR[1]; //Statement 1

for (int C=2;C<Size;C++) //Statement 2

if (ARR[C]<BIG) //Statement 3

ARR[C]=BIG; //Statement 4

return BIG; //Statement 5

}

(d) Find output of the following program segment:

int A[][3] = {{1,2,3}, {5,6,7}};

for (int i = 1; i<2; i++)

for (int j = 0; j<3; j++)

cout<<A[i][j]<<"*\n";

(e) Find output of the following program segment:

int a = 3;

void demo(int x, int y, int &z)

{ a += x+y;

z = a+y;

y += x;

cout<<x<<'*'<<y<<'*'<<z<<endl;

}

void main()

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