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c. ara = 15;

d. *(ip2 + 2) = 15; // Assuming ip2 and ara are equal.

2.5) Run the following program and explain the output.

#include<iostream.h>

void swap(int a[], int *c1, int *c2, int *d1, int *d2);

void main()

{

int a[2], c1, c2,d1,d2;

int *x1, *x2, *y1, *y2;

a[0] = 1 ; a[1]=2;

c1 = 1; c2 =2;

d1 = 1; d2 =2;

x1 =&c1; x2 =&c2;

y1 =&d1; y2 =&d2;

swap(a, x1,x2,y1,y2);

cout<<a[0]<<a[1]<<” “

<<*x1<<*x2<<” ”

<<*y1<<*y2;

swap(a, x1,x2,y1,y2);

cout<<a[0]<<a[1]<<” “

<<*x1<<*x2<<” ”

<<*y1<<*y2;

}

void swap(int a[], int *c1, int *c2, int *d1, int *d2)

{

a[0] = 2 ; a[1]=1;

*c1=2, *c2 =1;

int* temp = d1;

d1 =d2;

d2 = temp;

}

2.6) Write a declaration to store the following values into an array named rates: 12.9, 18.6, 11.4, 13.7, 9.5, 15.2, 17.6. Include the declaration in a program that displays the values in the array using pointer notation.

2.7) Given the following function that can find the largest element in an integer array. Notice that the function scans the elements in the array using pointer arithmetic:

int findMax(int * vals, int numEls)

{

int j, max = *vals;

for (j = 1; j<numEls; j++)

if (max<*(vals + j))

max = *(vals + j);

return max;

}

Write a C++ program that inputs an integer array and invokes the above function to find the largest element in that array and displays the result out.

2.8) In the following program, the function str_output() can display a string which is passed to it as a a pointer parameter:

#include<iostream.h>

#include<string.h>

#define MAX 80

void str_output(char *);

int main()

{

char a[MAX], b[MAX];

cin.getline(a, MAX, '\n');

str_output(a);

cout<<endl;

strcpy(b,a);

str_output(b);

cout<<endl;

return 0;

}

void str_output(char *ptr)

{

………..

}

a. Complete the function str_output() which displays each element in the string using pointer notation.

b. Run to test the whole program.

2.9) a. Write a function named days() that determines the number of days from the date 1/1/1900 for any date passed as a structure. Use the Date structure:

struct Date

{

int month;

int day;

int year;

}

In writing the days() function, use the convention that all years have 360 days and each month consists of 30 days. The function should return the number of days for any Date structure passed to it.

b. Rewrite the days() function to receive a pointer to a Date structure rather than a copy of the complete structure.

c. Include the function written in b) in a complete C++ program.

Lab session 8: introduction to classes

1. objective

The objectives of Lab session 8 are (1) to get familiar with how to define object classes; (2) to practice to write constructors and (3) to learn how to dynamically allocate/deallocate memory on the heap.

2. experiment

2.1) a. Read to understand the following program which uses the class student. Organize the program in one source program and run it on a C++ environment.

#include<iostream.h>

class student{

private:

long int rollno;

int age;

char sex;

float height;

float weight;

public:

void getinfo();

void disinfo();

};

void student::getinfo()

{

cout<<" Roll no :";

cin>>rollno;

cout<<" Age :";

cin>>age;

cout<<" Sex:";

cin>>sex;

cout<<" Height :";

Questions & Answers

Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Berger describes sociologists as concerned with
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what is hormones?
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Source:  OpenStax, Programming fundamentals in c++. OpenStax CNX. Jul 29, 2009 Download for free at http://cnx.org/content/col10788/1.1
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