conj() function in C++ with Examples

The conj() function is defined in the complex header file. This function is used to find the conjugate of the complex number z. If we represent a complex number z as (real, img), then its conjugate is (real, -img).
Syntax:

template<class T> complex<T> 
     conj (const complex<T>& Z);

Parameter:

• z: This method takes a mandatory parameter z which represents the complex number.

Return value: This function returns the conjugate of the complex number z.

Time Complexity: O(1)

Auxiliary Space: O(1)
Below programs illustrate the conj() function for complex number in C++:
Example 1:-

CPP

// C++ program to demonstrate
// example of conj() function.

#include <bits/stdc++.h>
using namespace std;

// driver program
int main ()
{
  complex<double> complexnumber (3.0, 2.4);

  cout << "The conjugate of " << complexnumber << " is: ";

  // use of conj() function
  cout << conj(complexnumber) << endl;
  return 0;
}

Output:

The conjugate of (3,2.4) is: (3,-2.4)

Example 2:-

CPP

// C++ program to demonstrate
// example of conj() function.

#include <bits/stdc++.h>
using namespace std;

// driver program
int main ()
{
  complex<double> complexnumber (2.0, 9.0);

  cout << "The conjugate of " << complexnumber << " is: ";

  // use of conj() function
  cout << conj(complexnumber) << endl;
  return 0;
}

Output:

The conjugate of (2,9) is: (2,-9)