real() function in C++
Last Updated :
08 Oct, 2018
The real() function is defined in the complex header file. The real() function is used to find the real part of the complex number.
Syntax:
template<class T> T
real(const complex<T>& z);
Parameter: This method takes a mandatory parameter z: which represents the given complex number.
Return: It returns the real part of the specified complex number.
Below programs illustrate the above function:-
Example 1:-
#include <bits/stdC++.h>
using namespace std;
int main()
{
complex< double > realpart(20.3, 4.9);
cout << "Complex Number = "
<< realpart << endl;
cout << "Real part of the complex number is ="
<< real(realpart) << endl;
return 0;
}
|
Output:
Complex Number = (20.3, 4.9)
Real part of the complex number is =20.3
Example 2:-
#include <bits/stdC++.h>
using namespace std;
int main()
{
complex< double > realpart(2, 2);
cout << "Complex Number = "
<< realpart << endl;
cout << "Real part of the complex number is ="
<< real(realpart) << endl;
return 0;
}
|
Output:
Complex Number = (2, 2)
Real part of the complex number is =2
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