The imag() function is defined in the complex header file. The imag() function is used to find the imaginary part of the complex number.
Syntax:
template<class T> T
imag(const complex<T>& z);
Parameter: This method takes a mandatory parameter z: which represents the given complex number.
Return: It returns the imaginary part of the complex number.
Below programs illustrate the above function:-
Example 1:-
// C++ program to demonstrate // example of imag() function. #include <bits/stdC++.h> using namespace std;
// Driver function int main()
{ // defines the complex number: (20.3 + 4.9i)
complex<double> imagpart(20.3, 4.9);
// print the complex number
cout << "Complex Number = "
<< imagpart << endl;
// prints the imag part using the imag function
cout << "Imag part of the complex number is ="
<< imag(imagpart) << endl;
return 0;
} |
Output:
Complex Number = (20.3,4.9) Imag part of the complex number is =4.9
Example 2:-
// C++ program to demonstrate // example of imag() function. #include <bits/stdC++.h> using namespace std;
// driver function int main()
{ // defines the complex number: (2 + 2i)
complex<double> imagpart(2, 2);
// print the complex number
cout << "Complex Number = "
<< imagpart << endl;
// prints the imag part using the imag function
cout << "Imag part of the complex number is ="
<< imag(imagpart) << endl;
return 0;
} |
Output:
Complex Number = (2,2) Imag part of the complex number is =2