exercise6_5.cpp
来源: 分支语句和逻辑运算符
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课后练习参考答案
原始代码预览
// Create by Shujia Huang on 2021-08-03
#include <iostream>
int main() {
using namespace std;
const double tax_rate1 = 0.1;
const double tax_rate2 = 0.15;
const double tax_rate3 = 0.20;
double income = 0.0, tax = 0.0;
cout << "Please enter your income: ";
while ((cin >> income) && (income > 0)) {
if (income <= 5000) {
tax = 0.0;
} else if (income <= 15000 ) {
tax = (income - 5000) * tax_rate1;
} else if (income <= 35000) {
tax = (15000 - 5000) * tax_rate1 + (income - 15000) * tax_rate2;
} else {
tax = (15000 - 5000) * tax_rate1 + (35000 - 15000) * tax_rate2 + (income - 35000) * tax_rate3;
}
cout << "Income = " << income << ", tax = " << tax << endl;
cout << "Please enter your income again or enter a negative value to quit: ";
}
return 0;
}
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