本帖最后由 风过无痕1989 于 2020-12-2 00:28 编辑 #include <stdio.h>
#include <math.h>
int main()
{
double price, area, yir, mir; // 总价、面积、年利率、月利率
double interest, ratio, loan; // 利息、贷款总额
double ave_repay, down_payment; // 月均还款、首期付款
double total_price, total_repay; // 房款总额、还款总额
int time; // 按揭成数、按揭年数
printf("请输入单价(元/平方): ");
scanf("%lf", &price);
printf("请输入面积: ");
scanf("%lf", &area);
printf("请输入按揭成数: ");
scanf("%lf", &ratio);
printf("请输入按揭年数: ");
scanf("%d", &time);
printf("请输入当年基准年利率: ");
scanf("%lf", &yir);
mir = yir / 100 / 12; // 年利率需要除以100得到,因为用户输入是5.4(%),而不是0.054
time = time * 12;
total_price = price * area;
loan = total_price * ratio / 10; // 这里不能写成(ratio/10),否则結果会变成0
ave_repay = loan * mir * pow((1 + mir), time) / (pow((1 + mir), time) - 1);
interest = ave_repay * time - loan;
total_repay = loan + interest;
down_payment = total_price * (1 - (float)ratio / 10); //强制转换ratio为浮点型
printf("\n");
printf("==========报告结果==========\n");
printf("房款总额: %.2lf元\n", total_price);
printf("首期付款: %.2lf元\n", down_payment);
printf("贷款总额: %.2lf元\n", loan);
printf("还款总额: %.2lf元\n", total_repay);
printf("支付利息: %.2lf元\n", interest);
printf("月均还款: %.2lf元\n", ave_repay);
return 0;
}
忘记加行号了 |