#include <stdio.h>

struct complex
{
    float real;
    float imag;
};

int main()
{
    struct complex cplx = {6, 5};
    print_cplx(cplx);
    return 0;
}

float cplx_real(struct complex cplx)
{
    return cplx.real;
}

float cplx_imag(struct complex cplx)
{
    return cplx.imag;
}

struct complex cplx_conj(struct complex cplx)
{
    cplx.imag = -cplx.imag;
    return cplx;
}

void print_cplx(struct complex cplx)
{
    printf("%.4f + %.4fi", cplx.real, cplx.imag);
}

struct complex cplx_add(const struct complex cplx1, const struct complex cplx2)
{
    struct complex cplx = {cplx1.real+cplx2.real, cplx1.imag+cplx2.imag};
    return cplx;
}

struct complex cplx_sub(const struct complex cplx1, const struct complex cplx2)
{
    struct complex cplx = {cplx1.real-cplx2.real, cplx1.imag-cplx2.imag};
    return cplx;
}

struct complex cplx_nul(const struct complex cplx1, const struct complex cplx2)
{
    struct complex cplx = {cplx1.real*cplx2.real, cplx1.imag*cplx2.imag};
    return cplx;
}