运用数据结构知识用c语言实现复数的四则运算

在C语言中，复数通常可以使用结构体来表示，包括实部（real）和虚部（imaginary）。以下是使用结构体以及指针来实现复数四则运算的一个简单示例：

#include <stdio.h>
typedef struct {
    double real;
    double imag;
} Complex;

// 加法运算
Complex add(Complex a, Complex b) {
    Complex result = {a.real + b.real, a.imag + b.imag};
    return result;
}

// 减法运算
Complex subtract(Complex a, Complex b) {
    Complex result = {a.real - b.real, a.imag - b.imag};
    return result;
}

// 乘法运算
Complex multiply(Complex a, Complex b) {
    double real_part = a.real * b.real - a.imag * b.imag;
    double imag_part = a.real * b.imag + a.imag * b.real;
    Complex result = {real_part, imag_part};
    return result;
}

// 除法运算（假设分母不为零）
Complex divide(Complex a, Complex b) {
    double denominator = b.real * b.real + b.imag * b.imag;
    double real_part = (a.real * b.real + a.imag * b.imag) / denominator;
    double imag_part = (a.imag * b.real - a.real * b.imag) / denominator;
    Complex result = {real_part, imag_part};
    return result;
}

int main() {
    Complex num1 = {3.0, 4.0}; // 3 + 4i
    Complex num2 = {1.0, 2.0}; // 1 + 2i

    Complex sum = add(num1, num2);
    Complex difference = subtract(num1, num2);
    Complex product = multiply(num1, num2);
    Complex quotient = divide(num1, num2); // 注意这里需要检查除数是否为0

    printf("Sum: %.2f + %.2fi\n", sum.real, sum.imag);
    printf("Difference: %.2f + %.2fi\n", difference.real, difference.imag);
    printf("Product: %.2f + %.2fi\n", product.real, product.imag);
    if (quotient.imag != 0) {
        printf("Quotient: %.2f + %.2fi\n", quotient.real, quotient.imag);
    } else {
        printf("Cannot divide by zero.\n");
    }

    return 0;
}