实现Hello, world! 的方式:
先来几个python的
（注：使用的是python3.6版本）:
方式1：
使用python + reportlab库 生成PDF文件
from reportlab.graphics.shapes import Drawing, String from reportlab.graphics import renderPDF d = Drawing(860, 480) s = String(430, 240, 'Hello, world!', textAnchor='middle') s.fontSize = 100 d.add(s) renderPDF.drawToFile(d, 'hello.pdf', 'A simple PDF file')
运行后得到文件 hello.pdf
打开后看到：
方式2:
python + turtle库（turtle是很好用的1个图形库）
注：运行此程序可看到画图的过程
import turtle as t #移动笔，而不在路径中画 def move_pen_to(t,x,y): t.up() t.goto(x,y) t.down() #画H def drawH(x,y): move_pen_to(t, x, y) t.goto(x, y-100) move_pen_to(t, x, y-50) t.goto(x+50, y-50) move_pen_to(t,x+50,y) t.goto(x+50,y-100) #E def drawE(x,y): move_pen_to(t, x, y) t.goto(x+50, y) move_pen_to(t, x, y) t.goto(x, y-100) move_pen_to(t, x, y-50) t.goto(x+50, y-50) move_pen_to(t,x, y-100) t.goto(x+50, y-100) #画L def drawL(x, y): move_pen_to(t,x,y) t.goto(x, y-100) t.goto(x+50, y-100) #画O def drawO(x, y): move_pen_to(t,x,y) t.goto(x, y-100) t.goto(x+50, y-100) t.goto(x+50, y) t.goto(x,y) def drawW(x, y): move_pen_to(t, x, y) t.goto(x+(50/4),y-100) t.goto(x+(50/4)*2,y) t.goto(x+ (50/4)*3, y-100) t.goto(x+ (50/4)*4, y) def drawR(x,y): move_pen_to(t, x, y) t.goto(x+50,y) t.goto(x+50,y-30) t.goto(x, y-30) move_pen_to(t, x, y) t.goto(x, y-100) move_pen_to(t, x, y-30) t.goto(x+50, y-100) def drawD(x, y): move_pen_to(t, x, y) t.goto(x, y-100) t.circle(50,180) #设置宽度和速度 t.width(5) t.speed(2) #起点x,y x =-200 y = 200 drawH(x, y) drawE(x+50+20, y) drawL(x+50*2+20*2, y) drawL(x+50*3+20*3, y) drawO(x+50*4+20*4, y) line2 = y -100-20 drawW(x, line2) drawO(x+50+20, line2) drawR(x+50*2+20*2, line2) drawL(x+50*3+20*3, line2) drawD(x+50*4+20*4, line2)
方式3：python print()
print("Hello, world")
方式4:C语言 printf()
#include<stdio.h> int main() { printf("Hello, world"); return 0; }
方式5：C++ cout
#include<iostream> int main() { std::cout << "Hello, world"; return 0; }
方式6：C++ cout
#include<iostream> int main() { using std::cout; cout<< "HH HH\t" << "EEEEEEEEEE\t" << "LL \t" << "LL \t" << "OOOOOOOOOO\n" << "HH HH\t" << "EE \t" << "LL \t" << "LL \t" << "OO OO\n" << "HH HH\t" << "EE \t" << "LL \t" << "LL \t" << "OO OO\n" << "HHHHHHHHHH\t" << "EEEEEEEEEE\t" << "LL \t" << "LL \t" << "OO OO\n" << "HH HH\t" << "EE \t" << "LL \t" << "LL \t" << "OO OO\n" << "HH HH\t" << "EE \t" << "LL \t" << "LL \t" << "OO OO\n" << "HH HH\t" << "EEEEEEEEEE\t" << "LLLLLLLLLL\t" << "LLLLLLLLLL\t" << "OOOOOOOOOO\n"; cout<< "\n\n"; cout<< "WW WW WW\t" << "OOOOOOOOOO\t" << "RRRRRRRRRR\t" << "LL \t" << "DDDDDD\n" << "WW WW WW\t" << "OO OO\t" << "RR RR\t" << "LL \t" << "DD DD\n" << "WW WW WW\t" << "OO OO\t" << "RRRRRRRRRR\t" << "LL \t" << "DD DD\n" << "WW WW WW\t" << "OO OO\t" << "R RRR \t" << "LL \t" << "DD DD\n" << "WW WW WW\t" << "OO OO\t" << "R RRR \t" << "LL \t" << "DD DD\n" << "WW WW WW\t" << "OO OO\t" << "R RRR \t" << "LL \t" << "DD DD\n" << "WWWWWWWWWW\t" << "OOOOOOOOOO\t" << "R RRR\t" << "LLLLLLLLLL\t" << "DDDDDD\n"; system("pause"); return 0; }
方式7
Qt5
#include <QApplication> #include <QLabel> int main(int argc, char *argv[]) { QApplication app(argc, argv); QLabel label("Hello, world"); label.show(); return app.exec(); }
方式8
Java
public class hello { public static void main(String[] args) { System.out.println("Hello, world"); } }
