Page 112 - C++

MODEL TEST PAPER –III (Solved)

Time: 3 hrs. Max. Marks: 70

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.

Ans: float Percent(int a=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));
}
Ans: NOT required math.h and iostream.h

(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
}
Ans:
for (int C=0;C<Size;C++) //Statement 2
if (ARR[C] > BIG) //Statement 3
BIG= ARR[C]; //Statement 4

(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";
Ans: 5*
6*
7*
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;