drawsquares.cpp

C++&datastructure书籍源码,以前外教提供现在与大家共享

#include <iostream>
#include "canvas.h"
#include "prompt.h"
#include "randgen.h"
#include "utils.h"

int main()
{
    const int WIDTH=  400;
    const int HEIGHT= 400;
    const int SQ_SIZE = 40;
    
    RandGen rnd;
    Canvas c(WIDTH,HEIGHT,20,20);
    
    c.SetFrame();
    c.SetColor(CanvasColor::MAROON);
    int numSquares = PromptRange("# of squares: ",1,1000);
    int k;
  
    for(k=0; k < numSquares; k++)
    {
        Point p(rnd.RandInt(0,WIDTH-SQ_SIZE),
                rnd.RandInt(0,HEIGHT-SQ_SIZE));
        
        int size = rnd.RandInt(2,SQ_SIZE);
        
        c.DrawRectangle(p, Point(p.x+size, p.y+size));
    }

    WaitForReturn();
    
    return 0;
}