守望天使飞过.cpp

我学习C++ Primer Plus过程中写下的课后作业的编程代码

#include "iostream"
float fSingleMoney(float a,float p,int n);
float fMultiMoney(float a,float p,int n);
int main()
{
	using namespace std;
	int iYear=1;
	float a,b;
	a=b=100.0;
	while (a>=b)
	{
		a=fSingleMoney(100.0,0.1,iYear);
		b=fMultiMoney(100.0,0.05,iYear);
		iYear++;
	}
	cout<<iYear<<endl;
	cout<<"a="<<a<<", b="<<b<<endl;
	return 0;
}
float fSingleMoney(float a,float p,int n)
{
	return a+n*p*a;
}
float fMultiMoney(float a,float p,int n)
{
	for (int i=0;i<n;i++)
	{
		a+=a*p;
	}
	return a;
}