两个问题
一、ratio是个整型,装不了浮点数,所以声明要改
二、ave_repay放的位置不对,前边引用了都找不到值#include<stdio.h>
#include<math.h>
int main()
{
float price, area, yir, mir; //单价、面积、年利率、月利率
float interest, loan;//利息,贷款总额
float ave_repay, down_payment;// 月均还款、首付
float total_price, total_repay, ratio;;//房款总额,还款总额 按揭成数,
// int ratio, time; //按揭成数,按揭年数
int time; //按揭年数
// printf("请输入单价(元/平方):");
// scanf("%f",&price);
// printf("请输入面积:");
// scanf("%f",&area);
// printf("请输入按揭成数:");
// scanf("%d",&ratio); //%d
// printf("请输入按揭年数:");
// scanf("%f",&time);
// printf("请输入当前基准年利率:");
// scanf("%f",&yir);
price = 6000;
area = 120;
ratio = 7;
time = 20;
yir = 5.4;
mir = yir / 12 / 100;
// ratio = (float)ratio / 10;
ratio = ratio / 10;
printf("%f,%f\n",mir,ratio);
total_price = price * area;
down_payment = total_price * (1.0 - ratio);
loan = total_price * ratio / 10;
total_repay = loan + interest;
ave_repay = loan *mir * pow((1 + mir), time*12) / pow((1+mir),12*time) - 1;
printf("%d,%f,%f\n",time, ave_repay, loan);
interest = time * 12 * ave_repay - loan;
// ave_repay = loan *mir * pow((1 + mir), time*12) / pow((1+mir),12*time) - 1; 上边都引用了,你顺序不对
printf("=================报告结果=================\n");
printf("房款总额:%.2f元\n",total_price);
printf("首期付款:%.2f元\n",down_payment);
printf("贷款总额:%.2f元\n",loan);
printf("还款总额:%.2f元\n",total_repay);
printf("支付利息:%.2f元\n",interest);
printf("月均还款:%.2f元\n",ave_repay);
return 0;
}
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