Question

vc++中没有<complex.h>头文件，不知道怎么调用？

/* Program 2.17 Working with complex numbers */
#include <complex.h>
#include <stdio.h>

int main(void)
{
double complex cx = 1.0 + 3.0*I;
double complex cy = 1.0 - 4.0*I;
printf("Working with complex numbers:");
printf("\nStarting values: cx = %.2f%+.2fi cy = %.2f%+.2fi",
creal(cx), cimag(cx), creal(cy), cimag(cy));

double complex sum = cx+cy;
printf("\n\nThe sum cx + cy = %.2f%+.2fi",
creal(sum),cimag(sum));

double complex difference = cx-cy;
printf("\n\nThe difference cx - cy = %.2f%+.2fi", creal(difference),cimag(difference));

double complex product = cx*cy;
printf("\n\nThe product cx * cy = %.2f%+.2fi",
creal(product),cimag(product));

double complex quotient = cx/cy;
printf("\n\nThe quotient cx / cy = %.2f%+.2fi",
creal(quotient),cimag(quotient));

double complex conjugate = conj(cx);
printf("\n\nThe conjugate of cx = %.2f%+.2fi",
creal(conjugate) ,cimag(conjugate));
return 0;
}

Answer 1

#include <stdio.h>
#include<complex>
using namespace std;

将前面的两个include替换成上面代码。

Answer 2

conj(cx);creal(quotient),cimag(quotient));