Java语言程序设计（基础篇）第十版 5.3-6_java语言程序设计千锋教育9787302468349-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_41729287/article/details/83019707

本文介绍了一个使用Java编写的单位转换程序，包括千克到磅、英里到千米的转换，以及相反方向的转换。通过循环和格式化输出，展示了不同单位之间的换算关系。

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public class J5_3 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		System.out.printf("%8s%8s\n","千克","磅");

		for(int i =1;i<200;i+=2)
		{
			double kilogram = i;
			double pound = kilogram *2.2;
			
			System.out.printf("%4.0f%9.1f\n",kilogram,pound);
		}
	
			
	}

}


public class J5_4 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		System.out.printf("%8s%8s\n","英里","千米");

		for(int i =1;i<=10;i+=1)
		{
			double mile = i;
			double kilometer = mile *1.609;
			
			System.out.printf("%5.0f%11.4f\n",mile,kilometer);
		}
	}

}


public class J5_5 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		System.out.printf("%8s%8s%8s%8s\n","千克","磅","磅","千克");
		int j =20;
		for(int i =1;i<200;i+=2)
		{
			double kilogram = i;
			double pound = kilogram *2.2;
			
			double pounds = j;
			double  kilograms= pounds / 2.2;
			if(j<=515)
				j+=5;
			System.out.printf("%4.0f%9.1f%4.0f%9.3f\n",kilogram,pound,pounds,kilograms);
			
		}
	
	}

}

public class J5_6 {

	public static void main(String[] args) {
		System.out.printf("%8s%8s%8s%8s\n","英里","千米","千米","英里");
		int j =20;
		for(int i =1;i<=10;i++)
		{
			double mile = i;
			double kilometer = mile * 1.609;
			
			double kilometers = j;
			double  miles = kilometers / 1.609;
			if(j<=65)
				j+=5;
			System.out.printf("%4.0f%9.3f%7.0f%9.3f\n",mile,kilometer,kilometers,miles);
			
		}
	
	}
}