cpp/CPrimerPlus6E/XB/complex.c

//  complex.c
#include <stdio.h>
#include <complex.h>
void show_cmlx(complex double cv);
int main(void)
{
    complex double v1 = 4.0 + 3.0*I;
    double re, im;
    complex double v2;
    complex double sum, conj1;
    
    printf("Enter the real part of a complex number: ");
    scanf("%lf", &re);
    printf("Enter the imaginary part of a complex number: ");
    scanf("%lf", &im);
    v2 = CMPLX(re, im);
//    v2 = re + im * I;
    show_cmlx(v1);
    putchar('\n');
    show_cmlx(v2);
    putchar('\n');

    sum = CMPLX(creal(v1)+creal(v2), (cimag(v1) + cimag(v2)));
 //   sum = creal(v1)+creal(v2) +(cimag(v1)+ cimag(v2)) * I;
    conj1 =conj(v1);
    show_cmlx(sum);
    putchar('\n');
    show_cmlx(conj1);
    putchar('\n');
    
    return 0;
    
}

void show_cmlx(complex double cv)
{
    printf("(%f, %fi)", creal(cv), cimag(cv));
    return;
}