Question

输入两个整数a，b，输出（a+b）。要求可以输入多组a,b的值，用java写~

Answer 1

public class Util {
    public static void main(String[] args) {
        Sc s = new Sc();
        s.add();
    }
}
class Sc{
    public String add(){
        java.util.Scanner sc = new java.util.Scanner(System.in);
        try {
            System.out.println("请输入a的值.");
            int a = sc.nextInt();
            System.out.println("请输入b的值.");
            int b = sc.nextInt();
            System.out.println(a+" + "+b + " = " + (a+b));
            System.out.println("是否继续(Y/N)");
            String num = sc.next();
            if("Y".equals(num)){
                new Sc().add();
            }else if("N".equals(num)){
                System.exit(0);
            }else{
                System.out.println("输入有误，重新开始..");
                new Sc().add();
            }
        } catch (Exception e) {
            // TODO: handle exception
            System.out.println("只能是整数...");
        }
        return null;
    }
}

追问

太全面了~~

追答

不客气的。。。

Answer 2

public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int a;
int b;
while(true){
System.out.println("请输入a");
a=sc.nextInt();
System.out.println("请输入b");
b=sc.nextInt();
System.out.println("a+b="+a+b);
}
}

追问

灰常感谢，很实用~~