Question

以下是由点组成的正方形25 x 25网格的代码。我需要从用户输入x1，x2，y1，y2和两个字符（如@和/），并创建一个矩形，其中一个字符填充内部，一个字符勾勒出矩形。我不确定如何将这些输入工作到循环中并创建所述矩形。这是头文件....

// Rectangle.h

#ifndef Rectangle_h
#define Rectangle_h

#include <iostream>
using namespace std;

class Rectangle
{
private:
float length, width, perimeter, area;
int a, i, j, h, x1, x2, y1, y2;
char inner;

public:
Rectangle();    // default constructor

void printGrid();
void setValues();
void setIntChar();


};

#endif

这是源代码....

void Rectangle::setValues()
{
do
{
    cout << "Enter x1, x2, y1, and y2 such that x1 < x2 and y1 < y2:\n";
    cin >> x1;
    cin >> x2;
    cin >> y1;
    cin >> y2;
}
while(x1 >= x2 || y1 >= y2);

cout << endl << "Rectangle accepted.\n\n";
}

void Rectangle::setIntChar()
{
cout << "Enter a character to fill the interior of the rectangle: \n" << endl;
cin >> inner;
cout << endl << endl;
}

void Rectangle::printGrid()
{
for(i = 0; i < 25; i++) // prints 25 rows of 25 dots and a space after each dot
{   
    if(i < 16)
    cout << 25 - i << " ";// prints 25 - 10 in descending order 

if(i > 15)
    cout << 25 - i << "  "; // prints 9 - 1 in descending order

for(j = 0; j < 25; j++) // prints a line of 25 dots and 2 spaces after each dot
    cout << ".  ";

for(h = 0; h < 25; h++) // prints a line of 25 double-spaces
    cout << "  ";

cout << endl;       // ends the line after each iteration       
}

cout << "   ";

for (i = 1; i <= 25; i++)
{
    if(i < 10)
        cout << i << "  ";

    if(i > 9)
    cout << i << " ";
}

cout << endl << endl;

}

这是主要功能......

#include "Rectangle.h"

///// main /////

int main()
{
Rectangle grid; // creates an object of the Rectangle class

grid.setValues();
grid.setIntChar();
grid.printGrid();
}

Answer 1

好吧，我不知道你学到的C ++有多远，但看起来你正在使用类？什么都是Rectangle类的成员变量？据推测它就像

class Rectangle {
    public:
        Rectangle();  // constructor sets member variables to default values
        void getInputFromUser();  // using stdout and stdin, prompts the user for x1, y1, x2, y2, line char, fill char, and sets the member variables to these values
        void printGrid(); // uses member variables to determine how to print the grid

        ...

    private:
        // private methods

        ...

        // private variables

        int m_x1;
        int m_x2;
        int m_y1;
        int m_y2;
        char m_lineChar;
        char m_fillChar;

        // static constants

        static const int kMinXValue; // set to 0 in the cpp file
        static const int kMinYValue; // set to 0 in the cpp file
        static const int kMaxXValue; // set to 25 in the cpp file
        static const int kMaxYValue; // set to 25 in the cpp file
};

因此，在您的课程中，您的getInputFromUser（）实现将包含一些代码行，如cout << "Please enter the top left corner's x value << endl;和cin >> m_x1;。

printGrid（）的实现将包含一些代码行，如for(int y = kMinYValue; y < kMaxYValue; y++) { // iterate through the rows和if( y == m_y1 || y == m_y2) { // we need to print the m_lineChar value if the x value is in range

希望能够回答你的问题，足以让你解决问题。如果您需要针对特定问题的特定帮助，则需要更加具体地了解您的工作，代码是什么以及您的代码存在问题。

网格上的矩形

1 个答案: