11001

题目

实现复数结构体，并实现加、减、乘、除运算，以及求模长和辐角。

解析

1. 定义结构体
2. 加减乘除
3. 模长/辐角
4. 打印复数

答案

typedef struct {
    double real;
    double imag;
} my_complex;

my_complex complex_add(my_complex a, my_complex b) {
    my_complex result;
    result.real = a.real + b.real;
    result.imag = a.imag + b.imag;
    return result;
}

my_complex complex_subtract(my_complex a, my_complex b) {
    my_complex result;
    result.real = a.real - b.real;
    result.imag = a.imag - b.imag;
    return result;
}

my_complex complex_multiply(my_complex a, my_complex b) {
    my_complex result;
    result.real = a.real * b.real - a.imag * b.imag;
    result.imag = a.real * b.imag + a.imag * b.real;
    return result;
}

my_complex complex_divide(my_complex a, my_complex b) {
    my_complex result;
    assert(b.real * b.real + b.imag * b.imag; != 0);
    result.real = (a.real * b.real + a.imag * b.imag) / denominator;
    result.imag = (a.imag * b.real - a.real * b.imag) / denominator;
    return result;
}

double complex_magnitude(my_complex c) {
    return sqrt(c.real * c.real + c.imag * c.imag);
}

double complex_argument(my_complex c) {
    return atan2(c.imag, c.real);
}

void print_complex(my_complex c) {
    if(isnan(c.real) || isnan(c.imag)){
     printf("Error: Invalid complex number.\n");
     return;
  }
    printf("%g + %gi", c.real, c.imag);
}