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crealf, creal, creall

From cppreference.com
< c‎ | numeric‎ | complex
Defined in header <complex.h>
float       crealf( float complex z );
(since C99)
double      creal( double complex z );
(since C99)
long double creall( long double complex z );
(since C99)

Returns the real part of z.

Contents

[edit] Parameters

z - complex argument

[edit] Return value

The real part of z.

[edit] Example

#include <stdio.h>
#include <complex.h>
 
int main()
{    
    double complex z = 1.0 + 2.0*I;
    printf("%f%+fi\n", creal(z), cimag(z));
 
    return 0;
}

Output:

1.000000+2.000000i

[edit] See also

(C99)(C99)(C99)
computes the imaginary part a complex number
(function) [edit]