[英]Java program not printing all of my print statements
在我的计算机科学课上,我们被要求创建一个程序,该程序将提示用户输入要在“魔术盒”中打印多少行,列和什么符号,并存储每个变量并打印它们自己的魔术盒,使用嵌套的for循环。 我的程序正确编译并根据我的输入打印正确的框,但它不打印我的两个打印语句。 它将打印前三个语句(提示用户输入某些内容的语句),但不打印语句
Here comes the magic...Here's your very own magic box
和
This magic box brought to you by Beth Tanner."
我已尽力想尽一切办法,但仍无法打印这些声明,我们将不胜感激。 我在下面包括我的程序。
import java.util.Scanner;
public class MagicBox {
public static void main(String[] args) {
Scanner input= new Scanner(System.in);
System.out.println("How many rows would you like in your box?");
int rows = input.nextInt();
System.out.println("How many columns would you like in your box?");
int columns = input.nextInt();
System.out.println("What symbol would you like in your box?");
String symbol = input.next();
System.out.println("Here comes the magic...\nHere's your very own magic box!");
int count1;
int count2;
for(count1 = 1; count1 <= rows; count1++)
for (count2 = 1; count2 <= columns; count2++)
System.out.print(symbol);
System.out.println();
System.out.println("This magic box brought to you by Beth Tanner.");
} // end main
} // end class
使用正确的块,一切正常。
注意,外部循环必须包含由System.out.println();
产生的换行符System.out.println();
。 在你的代码这个新行只印AFER 所有 row * columns
符号被印上一条线。
int rows = 5;
int columns = 3;
String symbol = "@";
System.out.println("Here comes the magic...\nHere's your very own magic box!");
for (int count1 = 1; count1 <= rows; count1++) {
for (int count2 = 1; count2 <= columns; count2++) {
System.out.print(symbol);
}
System.out.println();
}
System.out.println("This magic box brought to you by Beth Tanner.");
输出:
Here comes the magic...
Here's your very own magic box!
@@@
@@@
@@@
@@@
@@@
This magic box brought to you by Beth Tanner.
我不知道什么是魔术盒,但我认为您想要这样的东西:
for(count1 = 1; count1 <= rows; count1++) {
for (count2 = 1; count2 <= columns; count2++) {
System.out.print(symbol);
}
System.out.println();
}
您的初始代码有两个问题:
我想你想要这个:
for(count1 = 1; count1 <= rows; count1++){
for (count2 = 1; count2 <= columns; count2++)
System.out.print(symbol);
System.out.println();
}
甚至更清晰
for(count1 = 1; count1 <= rows; count1++){
for (count2 = 1; count2 <= columns; count2++){
System.out.print(symbol);
}
System.out.println();
}
这将为您提供您想要的魔术盒。
该链接可能帮助您看到差异: 省略花括号的stackoverflow问题
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