买房计算
#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、首期付款
float total_price,total_repay;// 房款总额、还款总额
int ratio,time;// 按揭成数、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);
printf("请输入按揭年数:");
scanf("%d",&time);
printf("请输入当前基准年利率:");
scanf("%f",&yir);
total_price = price * area ;// 房款总额=面积*单价
loan = total_price * ( ratio/10 ) ;// 贷款本金=房款总额*按揭成数
down_payment = total_price - loan ; // 首期付款=房款总额-贷款本金
mir = (yir/100)/12;
time=time*12;
ave_repay = loan * mir*pow((1+mir),time) / (pow((1+mir),time)-1);
interest = ave_repay*time-loan;
total_repay = interest+loan;
printf ("========== 报告结果 ==========\n");
printf ("贷款总额 ：%.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;
}
loan = total_price * ( ratio/10 )
我知道这句是错的 但是我用DEVC++ 打印出来为什么不等于0而是等于720000
要是等于0的话，两边必须有一个0 本帖最后由 小笨笨难得糊涂 于 2020-2-17 19:03 编辑
我打出来是0呀
把那句改成loan = total_price * ( ratio/10.0 ) ;即可
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