java - 为什么我的循环只运行一次？

Question

这是我的代码

executeProgram:
    for (int i= 0; 1< memory.length; i++)
    {   
        String twoDigitMemory = String.format("%02d",memory[i] );
        System.out.print(twoDigitMemory +" ? +");
        accumulator = input.nextInt();

        if (input.nextInt() == -99999)
        {
            System.out.println("*** Program loading completed ***");
            System.out.println("*** Program execution begins  ***");
            break executeProgram;
        }
    }

这是我的输出。我输入123。

***            Welcome to Simpletron!            ****** Please enter your program one instruction    ****** (or data word) at a time. I will display     ****** the location number and a question mark (?)  ****** You then type the word for that location.    ****** Type -99999 to stop entering your program    ***00 ? +123

输入 123 并按 Enter 键后，我希望 for 循环再次运行打印“00？+”但没有任何反应，输入确实保存到变量中

Answer 1

您期望用户输入数字两次。一旦您存储在累加器中，而另一个只是比较数字，例如 if (input.nextInt() == -99999) ，这是不需要的。相反，您应该使用累加器变量进行检查，例如:

if (accumulater == -99999)