Object Oriented Programming: Number: 1

 No: 01

1. Experiment vision: To write a program on the concept of array of object.

2. OBJECTIVE: Program to implement an array of object in C++.

3.1 THEORY:

An array is a secondary variable that store similar data item in a continuous memory location. We can create array of built in data type. i.e. i

i.e. int X[10];

float Z[2];

char Y[15];

The above example shows the array of built in data type.

Array of Object is a collection of objects of same class. Elements of array are accessed by array name followed by index.

3.2 PROGRAM:

1) Following is an example which makes use of array of object to returns information about five students:

#include <iostream>

using namespace std;

class student

{

char name[30];

int age;

float per;

public:

void getdata();

void display();

};

void student::getdata()

{

cout<<"Enter information about student:";

cin>>name>>age>>per;

}

void student::display()

{

cout<<"\nname="<<name;

cout<<"\tage="<<age;

cout<<"\tper="<<per;

}

int main()

{

student s[5];

for(int i=0;i<=4;i++)

{

s[i].getdata();

}

for(int j=0;j<=4;j++)

{

s[j].display();

}

return 0;

}

3.3. OUTPUT:

4. conclusion:

Thus a C++ program Programs by using array of objecthas been executed successfully.

5. PRECAUTIONS:

1. Avoid wrong keywords
2. Check whether all brackets are closed properly or not.
3. Take desired output.
4. In case of abnormal results, Contact the teacher/instructor, repeat the experiment, and check the algorithm and program.

6. REMARK:

Array of object is the concept is used for printing the values of number objects by writing the methods in class once at a time.

7. Discussion Questions:

1) what are objects? How are they created?

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2) What is class? How to declare it.

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3) What are the different access specifiers?

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4) What is the use of dot operator?

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