如何使用循环为 C++ 绘制矩形？
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How to draw a rectangle for c++ with loops?
提问by user1467995
So i have this code which makes a box, but want to make the corners +, the lengths |, and the widths - . Also want to input a number so you can draw them like cout<<"enter the length number" etc... how would i do that?
所以我有这个代码来制作一个盒子，但想要制作角 +、长度 | 和宽度 - 。还想输入一个数字，这样你就可以像 cout<<"enter the length number" 等一样绘制它们......我该怎么做？
Here is what i have to make a box:
这是我必须做的一个盒子：
#include <iostream.h>
#include <string.h>
void main()
{
for(int z=1; z<=79; z++)
{
cout << "";
}
cout << endl;
for(int i=1; i<=5; i++)
{
cout << "";
for(int j=1; j<=77; j++)
{
cout << " ";
}
cout << "" << endl;
}
for(int y=1; y<=79; y++)
{
cout << "";
}
cout << endl;
}
回答by Mantas Norvai?a
Draws a rectangle where int heightis the height and int widthis the width
绘制一个矩形，其中int height是高度，int width是宽度
#include <iostream>
void draw_rect(int width,int height)
{
using std::cout;
cout << "+";
for (int i = 0; i < width - 2; i++)
{
cout << "-";
}
cout << "+\n";
for (int i = 0; i < height - 2; i++)
{
cout << "|";
for (int j = 0; j < width - 2; j++)
{
cout << " ";
}
cout << "|\n";
}
cout << "+";
for (int i = 0; i < width - 2; i++)
{
cout << "-";
}
cout << "+\n";
}
int main ()
{
draw_rect(8,6);
return 0;
}
And for how to get user input read this: Basic C++ IO
关于如何获取用户输入，请阅读： Basic C++ IO
回答by Firefox_
#include <iostream>
using namespace std;
void draw_rect( int width, int height)
{
int i;
cout << char(218);
for (i=0; i<width-2; i++)
cout << char(196);
cout << char(191) << endl;
for (i=0; i<height-2; i++)
{
cout << char(179);
for (int j=0; j<width-2; j++)
cout << " ";
cout << char(179) << endl;
}
cout << char(192);
for(i=0; i<width-2; i++)
cout << char(196);
cout << char(217) << endl;
}
int main()
{
draw_rect(20,10);
return 0;
}
