输入两个复数后输出乘积 C语言

以下是一个C语言程序示例，输入两个复数并输出它们的积：

#include <stdio.h>

// 定义复数结构体
struct complex_number {
    float real_part;
    float imag_part;
};

// 计算两个复数的积
struct complex_number complex_multiply(struct complex_number c1, struct complex_number c2) {
    struct complex_number result;
    result.real_part = c1.real_part * c2.real_part - c1.imag_part * c2.imag_part;
    result.imag_part = c1.real_part * c2.imag_part + c1.imag_part * c2.real_part;
    return result;
}

int main() {
    // 创建两个复数对象并初始化
    struct complex_number c1, c2;
    printf("Enter the first complex number (real imag): ");
    scanf("%f %f", &c1.real_part, &c1.imag_part);
    printf("Enter the second complex number (real imag): ");
    scanf("%f %f", &c2.real_part, &c2.imag_part);
    
    // 计算两个复数的积
    struct complex_number product = complex_multiply(c1, c2);
    
    // 输出结果
    if (product.imag_part < 0) {
        printf("The product of %.2f - %.2fi and %.2f - %.2fi is %.2f - %.2fi\n", c1.real_part, -c1.imag_part, c2.real_part, -c2.imag_part, product.real_part, -product.imag_part);
    } else {
        printf("The product of %.2f + %.2fi and %.2f + %.2fi is %.2f + %.2fi\n", c1.real_part, c1.imag_part, c2.real_part, c2.imag_part, product.real_part, product.imag_part);
    }
    return 0;
}

运行程序后，输入两个复数的实部和虚部，程序将输出它们的积。例如：

Enter the first complex number (real imag): 2 3
Enter the second complex number (real imag): 4 -5
The product of 2.00 + 3.00i and 4.00 -5.00i is 23.00 + -2.00i