我编的代码哪里错了希望有缘人指出

#include <stdio.h>

int main() {
    double income; // 收入
    double tax = 0; // 税收

    printf("请输入您的收入: ");
    scanf("%lf", &income);

    if (income <= 800) {
        tax = 0;
    } else if (income <= 2000) {
        tax = (income - 800) * 0.05;
    } else if (income <= 8000) {
        tax = 1200 + (income - 2000) * 0.1;
    } else {
        tax = 1200 + 6000 * 0.1 + (income - 8000) * 0.2;
    }

    printf("您需要缴纳的税收为: %.2lf\n", tax);

    return 0;
}