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Visual C++

InvestmentPlanner.cpp：源码内容

							// This is the main project file for VC++ application project 
// generated using an Application Wizard.
#include "stdafx.h"
#using <mscorlib.dll>
using namespace System;
// Function prototypes
void DisplayWelcome();
void DisplayProjectedValue(double amount, int years, double rate);
void DisplayProjectedValue(double amount, int years);
double GetInvestmentAmount();
int GetInvestmentPeriod(int min=10, int max=25);
// Define and initialize a global integer variable
int numberOfYourFunctionsCalled = 0;
// This is the entry point for this application
#ifdef _UNICODE
int wmain(void)
#else
int main(void)
#endif
{
	DisplayWelcome();
	
	Console::WriteLine(S"nIllustration...");
	DisplayProjectedValue(10000, 25, 6.0);
	Console::WriteLine(S"nEnter details for your investment:");
	double sum = GetInvestmentAmount();        
	int period = GetInvestmentPeriod(5, 25);                          
	Console::WriteLine(S"nYour plan...");
	DisplayProjectedValue(sum, period, 6.0);
	Console::Write(S"nNumber of your functions called: ");
	Console::WriteLine(numberOfYourFunctionsCalled);
	return 0;
}
// Display a welcome message to the user
void DisplayWelcome()
{
	numberOfYourFunctionsCalled++;
	
	Console::WriteLine(S"-------------------------------------------");
	Console::WriteLine(S"Welcome to your friendly Investment Planner");
	Console::WriteLine(S"-------------------------------------------");
	return;
}
// Calculate and display the projected value of the investment
void DisplayProjectedValue(double amount, int years, double rate)
{
	numberOfYourFunctionsCalled++;
	
	double rateFraction = 1 + (rate/100);
	double finalAmount = amount * Math::Pow(rateFraction, years);
	finalAmount = Math::Round(finalAmount, 2);
	Console::Write(S"Investment amount: ");
	Console::WriteLine(amount);
	Console::Write(S"Growth rate [%]: ");
	Console::WriteLine(rate);
	Console::Write(S"Period [years]: ");
	Console::WriteLine(years);
	Console::Write(S"Projected final value of investment: ");
	Console::WriteLine(finalAmount);
	return;
}
// Ask the user how much money they want to invest
double GetInvestmentAmount()
{
    numberOfYourFunctionsCalled++;
	
	Console::Write(S"How much money do you want to invest? ");
	
    String __gc * input = Console::ReadLine();
    double amount = input->ToDouble(0);
    return amount;
}
// Ask the user how long they want to invest their money (between min and max)
int GetInvestmentPeriod(int min, int max)
{
	numberOfYourFunctionsCalled++;
	
	Console::Write(S"Over how many years [");
	Console::Write(S"min=");
	Console::Write(min);
	Console::Write(S", max=");
	Console::Write(max);
	Console::Write(S"] ? ");
	
	String __gc * input = Console::ReadLine();
	int years = input->ToInt32(0);
	return years;
}

						