我不确定我是否在正确的位置使用了pow功能,但我想知道如何将月份设置为 - 月份供电。
以下是我假设的基本原则: 校长*(费率/ 12)/(1 - (1 +费率/ 12)^ - 月)
我收到错误消息: 错误C2064:术语不评估为采用1个参数的函数
这是我的代码:
#include <iostream>
#include <cmath>
using namespace std;
int main()
{
int y = -1;
double months;
double principle = 1000;
double rate = 7.20;
double monthly_pay;
cout << "Please enter the number of months you have to pay back the loan:";
cin >> months;
monthly_pay = principle*(rate/12)/((1-pow((1+rate/12), -months)));
cout << monthly_pay << endl;
return 0;
}
答案 0 :(得分:1)
double pow (double base, double exponent);
//Returns the value of the first argument raised to the power of the second argument.
所以改变
monthly_pay = principle*(rate/12)/(1-(1+rate/12)pow(months, y);
到
monthly_pay = principle*(rate/12)/((1-pow((1+rate/12), -months));
答案 1 :(得分:0)
我将你的算法分解成更小的函数(我希望你不介意)。我想出了这个编译得很好的代码。我相信你理解了这个概念,你只是忘了使用星号乘以pow(a,b)函数。
#include <iostream>
#include <cmath>
using namespace std;
int main()
{
int y = -1;
double months;
double principle = 1000;
double rate = 7.20;
double monthly_pay;
double a, b;
cout << "Please enter the number of months you have to pay back the loan:";
cin >> months;
a = rate / 12;
b = pow(months, y);
monthly_pay = (principle * a) / (1 - (1 + a) * b);
cout << monthly_pay << endl;
return 0;
}
我希望这有帮助!