Python基础第一天

一、"hello world!"

public class HelloWorld {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("HelloWorld");
}
}

#include <stdio.h>

main() {
  printf("hello world\n");
}

print("hello world!")

#打印"hello world！"   在这里被“#”注销掉内容不会被输出
print("hello world!") 

a = 2
b = 6
print(a + b)
print(b - a)
print(a * b)
print(b / a)

a = 10
prinr(type(a))
a = 'abc'
print(type(b))
a = 3.14
print(type(c))

name = "好好学习，天天向上！"#定义一个字符串
print(name)
print(type(name))

a = "好好学习，天天向上！"
b = '学好Python'    #定义另一个字符串
c = a + b    #俩个字符串相加，结果如下
print(c)

a = "好好学习，天天向上！"
b = '学好Python'
c = a + b
print(a * 3) #好好学习的输出结果乘与三
print(c * 3) #c的结果乘与三倍