sum100.java

来自「java的一些小型程序代码」· Java 代码 · 共 42 行

/*
 * Created on 2007/03/23
 *
 * TODO To change the template for this generated file go to
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 */

/**
 * @author BFJ1
 *
 * TODO To change the template for this generated type comment go to
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 */
public class Sum100 {

	public static void main(String[] args) {
		int i=0,sum=0;
		for(;i<=100;i++)
			{sum=sum+i;}
		System.out.println("1to100 for sum = "+sum);
		System.out.println("This sum use \"for\" method.");
		sum=0;
		i=0;
		while(i<=100)
		{
			sum=sum+i;
			i++;
		}
		System.out.println("1to100 for sum = "+sum);
		System.out.println("This sum use \"while\" method.");
		sum=0;
		i=0;
		do
		{
			sum=sum+i;
			i++;
		}while(i<=100);
		System.out.println("1to100 for sum = "+sum);
		System.out.println("This sum use \"do-while\" method.");
	}
}