Question

使用Java编写一个程序，使其从键盘上读取三个整数，并求和！

Answer 1

import java.util.Scanner; public class TIS {
public static void main(String[] args) {
int sum = 0;
Scaner scan = new Scanner(System.in); // 读取三个整数，并相加
sum += scan.nextInt();
sum += scan.nextInt();
sum += scan.nextInt(); // 输出 和
System.out.println(sum);
}
}

Answer 2

import java.util.Scanner; public class Demo1 {
public static void main(String[] args){
Scanner scanner = new Scanner(System.in);
int number = 0;
int sum = 0;
System.out.println("输入一个数,按回车输入下一个数：");
for(int i=0;i<3;i++){
number = scanner.nextInt();
sum+=number;
}
System.out.println("和是："+sum);
}
}

Answer 3

import java.util.Scanner;public class A{ public static void main(String args[]){ Scanner input=new Scanner(System.in); double s=0; for(int i=1;i<=3;i++){ System.out.print("请输入第"+i+"个数:"); s+=input.nextInt(); } System.out.println("三个数的和"+s); }}

Answer 4

Scanner/System.in