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202401-programming-assignments/【实践课内】15.结构体1/6-1 计算两个复数之积.md

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# 6-1 计算两个复数之积
本题要求实现一个计算复数之积的简单函数。
### 函数接口定义:
```c++
struct complex multiply(struct complex x, struct complex y);
```
其中`struct complex`是复数结构体,其定义如下:
```c++
struct complex{
int real;
int imag;
};
```
### 裁判测试程序样例:
```c++
#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;
}
/* 你的代码将被嵌在这里 */
```
### 输入样例:
```in
3 4 5 6
```
### 输出样例:
```out
(3+4i) * (5+6i) = -9 + 38i
```