Question

编写求两个复数之积的函数product()求复数之积

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Answer 1

/*
输入样例：
3 4 5 6
输出样例：
(3+4i) * (5+6i) = -9 + 38i
*/

#include <stdio.h>

struct complex{
int real;
int imag;
};

struct complex multiply(struct complex x, struct complex y);

int main()
{
struct complex product, x, y;

scanf("%d%d%d%d", &x.real, &x.imag, &y.real, &y.imag);
product = multiply(x, y);
printf("(%d+%di) * (%d+%di) = %d + %di\n",
x.real, x.imag, y.real, y.imag, product.real, product.imag);

return 0;
}

struct complex multiply(struct complex x, struct complex y)
{
struct complex product;
product.real=x.real*y.real-x.imag*y.imag;
product.imag=x.real*y.imag+x.imag*y.real;
return product;
}