Lecture 15
Overloading Operator
Code:
#include <iostream>
#include <conio.h>
using namespace std;
int main (int argc, char *argv[])
{
int a=4;
cout <<
"It is a condition check \n";
cout
<<"It is a true : "<< (a>1 || a==4) << endl;
cout
<<"It is a false : "<< (a>1 || a!=4) << endl;
getch();
return 0;
}
Code view in dev compiler:
Compile the program Ctrl+F9
Run program Ctrl+F10
Q) A program that
takes a four digits integer from user and shows the digits on the screen separately
i.e. if user enters 7531, it displays 7,5,3,1 separately.
Ans:
Code:
#include <iostream>
#include <conio.h>
using namespace std;
int main (int argc, char *argv[])
{
// declare
variables
int number, digit;
// prompt the user
for input
cout <<
"Please enter 4-digit number:";
cin >>
number;
// get the first
digit and display it on screen
digit = number %
10;
cout <<
"The digits are: ";
cout <<
digit << ", ";
// get the
remaining two digits number
number = number /
10;
// get the next
digit and display it
digit = number %
10;
cout <<
digit << ", ";
// get the
remaining two digits number
number = number /
10;
// get the next
digit and display it
digit = number %
10;
cout <<
digit << ", ";
// get the
remaining two digits number
number = number /
10;
// get the
next digit and display it
digit = number %
10;
cout <<
digit << ", ";
// get the
remaining two digits number
number = number /
10;
getch();
return 0;
}
Code view in dev compiler:
Compile the program Ctrl+F9
Run program Ctrl+F10
Q)
Following program takes the radius of a circle from the user and calculates the
diameter, circumference and area of the circle and displays
the result.
Ans:
Code:
#include
<iostream>
#include
<conio.h>
using
namespace std;
int main (int
argc, char *argv[])
{
// declare variables
float radius, diameter, circumference, area;
// prompt the user for radius of a circle
cout << "Please enter the radius
of the circle " ;
cin >> radius ;
// calculate the diameter, circumference and
area of the circle
// implementing formula i.e. diameter = 2 r
circumference = 2 ç r and area = ç r2
diameter = radius * 2 ;
circumference = 2 * 3.14 * radius ; // 3.14
is the value of ç (Pi)
area = 3.14 * radius * radius ;
// display the results
cout << "The diameter of the
circle is : " << diameter ;
cout << "\n circumference of the circle is : "
<< circumference ;
cout << "\n area of the circle is : " << area
;
getch();
return 0;
}
Code view in dev compiler:
Compile the program Ctrl+F9
Run program Ctrl+F10
