我创建了一个基本的consol程序,它创建了一个用户所需高度和宽度的框。我想学习类的工作方式,所以我只使用了一个文件。现在我试图将类正确地放入.h和.cpp文件中。有人可以指出我做错了什么以及我该如何解决它?
原始代码只有一个main.cpp:
lstm
使用main.cpp,BoxClass.h,Boxclass.cpp的新代码:
main.cpp中:
$columntoextract = '30','31','39'
$endcol = $($columntoextract[2])
$endcol
BoxClass.h:
#include "stdafx.h"
#include <iostream>
using namespace std;
class BoxClass {
//prv variables
unsigned short int width;
int height, i;
float space_Value;
float height_Count = 1;
bool error = false;
//prv functions
void Print_Rectangle(int x, int y) {
//calc
space_Value = (3 * x) - 4;
//draw top of box
for (width = 1; width < x; width += 1) {
cout << "...";
}
cout << "\n";
//draw sides
for (height = 1; height < y; height += 1) {
cout << ":";
height_Count++;
for (width = 1; width < space_Value; width += 1) {
cout << " ";
}
cout << ":\n";
}
//draw bottom
cout << ":";
for (width = 1; width < space_Value; width += 1) {
cout << ".";
}
cout << ":\n";
}
public:
//function shows area of individual spaces
float Rectangle_Area() {
if (error == false) {
return (height_Count - .5)*(space_Value - 1);
}
else {
return 0;
}
}
//function shows area of individual spaces
// constructor
BoxClass(int x, int y, int amount) {
if (x <= 41) {
for (i = 1; i <= amount; i += 1) {
Print_Rectangle(x, y);
}
}
else {
error = true;
cout << "Error - width must be below 42!\n";
}
};
};
int main() {
//variable declaration/definition
int width_Var;
int height_Var;
int number_of_Boxes;
//object declaration/Body
cout << "Enter width of rectangle/box\nWidth = ";
cin >> width_Var;
cout << "Enter height of rectangle/box\nHeight = ";
cin >> height_Var;
cout << "How many rectangles/boxes do you want?\n";
cin >> number_of_Boxes;
BoxClass box1(width_Var, height_Var, number_of_Boxes);
cout <<"Box Area = "<<box1.Rectangle_Area() << endl;
//exit
cout << "\n\n\n\n\n";
system("pause");
return 0;
}
BoxClass.cpp:
#include "BoxClass.h"
#include "stdafx.h"
#include <iostream>
using namespace std;
int main() {
//variable declaration/definition
int width_Var;
int height_Var;
int number_of_Boxes;
//object declaration/Body
cout << "Enter width of rectangle/box\nWidth = ";
cin >> width_Var;
cout << "Enter height of rectangle/box\nHeight = ";
cin >> height_Var;
cout << "How many rectangles/boxes do you want?\n";
cin >> number_of_Boxes;
BoxClass box1(width_Var, height_Var, number_of_Boxes);
cout <<"Box Area = "<<box1.Rectangle_Area() << endl;
//exit
cout << "\n\n\n\n\n";
system("pause");
return 0;
}
答案 0 :(得分:0)
您忘记了类型说明符,因此您应该在BoxClass.cpp中更改它:
BoxClass::Print_Rectangle(int x, int y)
...
BoxClass::Rectangle_Area()
到此:
void BoxClass::Print_Rectangle(int x, int y)
...
float BoxClass::Rectangle_Area()
也有点偏离主题,我可以建议你将来的事情是使用#pragma once
而不是包括警卫。
答案 1 :(得分:0)
您需要一个构造函数,您可以在其中设置height_Count和error的值。你应该也可以定义一个析构函数,即使在这一点上可能没有什么可做的。这只是一个好主意。根据Scott Meyers的Effective C ++,您还应该定义一个复制构造函数和一个复制赋值运算符。
这是已发布的类型说明符建议的补充。