Obtains the real part of a complex number

#include <complex.h>
double creal ( double complex z  );
float crealf ( float complex z  );
long double creall ( long double complex z  );

A complex number is represented as two floating-point numbers, one quantifying the real part and one quantifying the imaginary part. The creal( ) function returns the floating-point number that represents the real part of the complex argument.

Example

double complex z = 4.5 - 6.7 * I;

printf( "The complex variable z is equal to %.2f %+.2f \xD7 I.\n",
        creal(z), cimag(z) );

This code produces the following output:

The complex variable z is equal to 4.50 -6.70 x I.

See Also

cimag( ), cabs( ), carg( ), conj( ), cproj( )