public class TestMethod{
	public static void main(String[] args) {
		int y=12; 
		int x=10;
		int result1= add(x,y);
		System.out.println("两个整数的和为:"+result1);
		double result2=add(12.5,23.6);
		System.out.println ("两个浮点数的和为:"+result2);
		int result3=add(23,45,67);
		System.out.println ("三个整数的和为:"+result3);
	}
	public static int add(int a,int b){
		int sum;
		sum = a+b;
		return sum;
	}
	public static double add(double a,double b){
		double sum;
		sum = a+b;
		return sum;
	}
 public static int add(int a,int b,int c){
		int sum;
		sum = a+b+c;
		return sum;
	}
}