C++ 为什么我的程序输出一个巨大的十进制数?
好的,我创建了一个程序,模拟了一家园林公司,所以我们必须计算草皮和围栏的成本。因此,当我输入长度和宽度时,他们会输出巨大的小数C++ 为什么我的程序输出一个巨大的十进制数?,c++,visual-studio,inheritance,project,C++,Visual Studio,Inheritance,Project,好的,我创建了一个程序,模拟了一家园林公司,所以我们必须计算草皮和围栏的成本。因此,当我输入长度和宽度时,他们会输出巨大的小数 Parkton Landscaping Enter Length: 10 Enter width: 12 Lanscaping Costs Sod = 6871947680.00 Fence = 19327352760.00 Press any key to continue . . . 假设Sod=56.4
Parkton Landscaping
Enter Length: 10
Enter width: 12
Lanscaping Costs
Sod = 6871947680.00
Fence = 19327352760.00
Press any key to continue . . .
假设Sod=56.40
假设围栏=990.00
请帮助这里是我的代码和两个文件
#include <iostream>
#include <iomanip>
using namespace std;
#include "c:\Users\barta\OneDrive\Documents\Visual Studio 2015\Projects\Project 6\Project 6\Geometry.h"
#include "Pricing.h"
int main()
{
int length, width;
Pricing landscape;
Geometry geo;
const double Fenceprice = 22.50;
const double Sodprice = .47;
cout << "\t Parkton Landscaping " << endl;
cout << "Enter Length: ";
cin >> length;
cout << "Enter width: ";
cin >> width;
//Pricing(length, width);
//geo.getLength();
//geo.getWidth();
std::cout << std::fixed << std::setprecision(2);
landscape.displayOutput();
cout << "Sod = " << landscape.getsodCost(length) << endl;
cout << "Fence = " << landscape.getFenceCost(Fenceprice) << endl;
system("pause");
return 0;
}
#包括
#包括
使用名称空间std;
#包括“c:\Users\barta\OneDrive\Documents\Visual Studio 2015\Project\Project 6\Project 6\Geometry.h”
#包括“Pricing.h”
int main()
{
int长度、宽度;
定价格局;
几何地理;
const-double-Fenceprice=22.50;
const-double-Sodprice=.47;
库特宽度;
//定价(长度、宽度);
//geo.getLength();
//geo.getWidth();
std::cout因为您从不使用有效值初始化对象,这意味着Geometry::width
和Geogrpapy::length
未初始化且具有不确定的值。使用未初始化的对象会导致未定义的行为。那么我会在几何体头文件中初始化这些对象吗?@BartAlen您可能应该是c调用getArea
之前,先调用setLength
和setWidth
函数。我试过了,但仍然得到了相同的结果@Joachim pileborge我想Joachim已经找到了根本原因。你介意显示你初始化该类的代码吗?@BartWell我试过了,它说该函数无法访问
#pragma once
class Geometry
{//an object is how you access the class
public:// where the public function definitions are created
Geometry();// Default Constructor
Geometry(int, int);
Geometry(int);
void setLength(int); //assigns length
void setWidth(int); //assigns width
void setSide(int); //assigns side
//Constructor function that recieves the values for the rectangle
//Constructor function that recieves values for the cube
int getLength(),
getWidth(),
getSide(),
getArea(),
getPerimeter(),
getSurfaceArea();
private: //where the private members are created
int length,
width,
side;
void checkNum(int); //function that checks to see if the number is less than 0
};
Geometry::Geometry()
{
length = length;
width = width;
side = 0;
}
Geometry:: Geometry(int length, int width) /*function recieves 2 intergers and calls checkNum to validate if */
{
setLength(length);
setWidth(width);
checkNum(length);
checkNum(width);
}
Geometry:: Geometry(int sides)
{
checkNum(sides);
setSide(sides);
}
int Geometry::getLength()
{
return length;
}
int Geometry::getWidth()
{
return width;
}
int Geometry::getSide()
{
return side;
}
int Geometry::getArea()
{
return length * width;
}
int Geometry::getPerimeter()
{
return 2 * (length + width);
}
int Geometry::getSurfaceArea()
{
return 6 * (side * side);
}
void Geometry::setLength(int len)
{
length = len;
checkNum(len);
}
void Geometry::setWidth(int widths)
{
width = widths;
checkNum(widths);
}
void Geometry::setSide(int s)
{
side = s;
checkNum(s);
}
void Geometry::checkNum(int num) //function checks to see if the number is less than zero
{
if (num <= 0)
{
cout << "!!!!!!!!WARNING!!!!!! this isnt a number" << " program will now exit......" << endl;
system("pause");
exit(1);
}
}
#include "Geometry.h"
class Pricing : Geometry
{
public:
Pricing();
Pricing(int length, int width);
double getsodCost(double);
double getFenceCost(double);
void displayOutput();
private:
};
Pricing::Pricing(int length, int width) :Geometry(length, width)
{
}
Pricing::Pricing()
{
}
double Pricing::getsodCost(double price)
{
getArea();
return getArea()*price;
}
double Pricing::getFenceCost(double price)
{
getPerimeter();
return getPerimeter()*price;
}
void Pricing::displayOutput()
{
cout << "\n\n";
cout << "\t Lanscaping Costs " << endl;
}