Object Oriented Programming Practical 2
Question 1
Write a C++ program to access the global variable using scope resolution operator.
global.cpp
C
#include<iostream.h>
#include<conio.h>
int num=100;
void main()
{
clrscr();
int num;
cout<<"Enter number: ";
cin>>num;
cout<<"Value of number inside main is: "<<num<<endl;
cout<<"Value of number outside main is: "<<::num<<endl;
getch();
}
Output
Question 2
Format the following statement using manipulators.
(Rate=412345 period=35 year=2024 )
format.cpp
C
#include <iostream.h>
#include <stdio.h>
#include <conio.h>
#include <iomanip>
void main()
{
int rate = 412345;
int period = 35;
int year = 2024;
cout << "Formatted Statement:\n";
cout << "Rate : " << ::setw(10) << ::setfill('0') << rate << '\n';
cout << "Period : " << ::setw(10) << ::setfill(' ') << period << '\n';
cout << "Year : " << ::setw(10) << ::setfill(' ') << year << '\n';
getch();
}
Output
Question 3
Write a C++ Program which show the use of function outside the class using scope resolution operator
expression2.cpp
C
#include<iostream.h>
#include<conio.h>
class MyClass
{
public:
void display();
};
void MyClass::display() {
cout << "This function is outside class"<<endl;
}
void main() {
MyClass obj;
obj.display();
getch();
}
Output
Question 4
Write a program to display the massage “Welcome to the world of C++” using manipulators.
welcome.cpp
C
#include <iostream.h>
#include<conio.h>
#include <iomanip>
void main()
{
cout <<setw(40) <<setfill('*') << "Welcome to the world of C++" <<endl;
getch();
}
Output
Question 5
Write a program to create the memory using new operator and free the created memory using delete operator.
memory.cpp
C
#include <iostream.h>
#include <conio.h>
void main()
{
int* ptr;
ptr = new int;
*ptr = 100;
cout << "Address of new memory: " << ptr << endl;
cout << "Value at memory: " << *ptr<<endl;
delete ptr;
cout << "Memory deleted";
getch();
}
Output
