如何在C ++中创建一个正方形

Question

如何在C ++中制作一个方框？

Answer 1

我不确定你要做的是什么，但这听起来像是我的第一个程序之一（用巨大的图形在屏幕上打印“BEAUTY EH？”。绘制问号非常困难。）。但这是一个显示如下框的程序：

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这是程序：

#include <cstdlib>  // It's always best to include this file before any others.
#include <iostream> // This is so we can use "cout"

int main()
{
    // first let's save ourselves a little typing
    using namespace std;

    // We're going to draw a box of stars ("*").
    // It will be 80 characters wide by 10 rows tall.
    //
    // Since we're writing to the console using 'cout',
    // we're just going to write one line at a time,
    // and then issue a carraige return to start printing
    // on the next line.

    // First let's draw the top "wall", which is a solid 
    // row of 80 stars, one at a time
    for (int column = 0; column < 80; ++column)
    {
        cout << "*";
    }
    // now print a carraige return, so we can start printing on the next line
    cout << "\n";

    // Now we're going to print the sides.
    // There are 8 rows here.  Each row is a star, followed by
    // 78 spaces, followed by another star and a carraige return.
    for (int row = 0; row < 8; ++row)
    {
        // print the left "wall"
        cout << "*";
        // now print 78 spaces
        for (int column = 0; column < 78; ++column)
        {
            cout << " ";
        }
        // finally print the right "wall" and a carraige return
        cout << "*\n";
        // continue the for loop to print the next row
    }

    // Once the loop is done, we can print the bottom wall the same way we printed the top one.
    for (int column = 0; column < 80; ++column)
    {
        cout << "*";
    }
    // now print a carraige return, so we can start printing on the next line
    cout << "\n";

}

Answer 2

使用ascii字符可以帮助您制作漂亮的盒子。如果你看一下这个网站上的表：http://www.theasciicode.com.ar/extended-ascii-code/box-drawing-character-ascii-code-179.html，你可以看到185-188和200-207非常适合制作一个盒子。我使用187和188绘制右角，左角为200和201，垂直和水平墙为186和205。请记住，整数和字符在编译器的脑海中是相同的，所以如果将这些整数值赋给char变量，它将输出ascii值。