complex::imag
Extracts the imaginary component of a complex number.
Type imag( ) const;
Type imag(const Type& _Right);
Parameters
- _Right
A complex number whose imaginary value is to be extracted.
Return Value
The imaginary part of the complex number.
Remarks
For a complex number a + bi, the imaginary part or component is Im(a + bi) = b.
Example
// complex_imag.cpp
// compile with: /EHsc
#include <complex>
#include <iostream>
int main( )
{
using namespace std;
complex <double> c1 ( 4.0 , 3.0 );
cout << "The complex number c1 = " << c1 << endl;
double dr1 = c1.real ( );
cout << "The real part of c1 is c1.real ( ) = "
<< dr1 << "." << endl;
double di1 = c1.imag ( );
cout << "The imaginary part of c1 is c1.imag ( ) = "
<< di1 << "." << endl;
}
The complex number c1 = (4,3) The real part of c1 is c1.real ( ) = 4. The imaginary part of c1 is c1.imag ( ) = 3.
Requirements
Header: <complex>
Namespace: std