[英]Java program not printing all of my print statements
在我的計算機科學課上,我們被要求創建一個程序,該程序將提示用戶輸入要在“魔術盒”中打印多少行,列和什么符號,並存儲每個變量並打印它們自己的魔術盒,使用嵌套的for循環。 我的程序正確編譯並根據我的輸入打印正確的框,但它不打印我的兩個打印語句。 它將打印前三個語句(提示用戶輸入某些內容的語句),但不打印語句
Here comes the magic...Here's your very own magic box
和
This magic box brought to you by Beth Tanner."
我已盡力想盡一切辦法,但仍無法打印這些聲明,我們將不勝感激。 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
使用正確的塊,一切正常。
注意,外部循環必須包含由System.out.println();
產生的換行符System.out.println();
。 在你的代碼這個新行只印AFER 所有 row * columns
符號被印上一條線。
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.");
輸出:
Here comes the magic...
Here's your very own magic box!
@@@
@@@
@@@
@@@
@@@
This magic box brought to you by Beth Tanner.
我不知道什么是魔術盒,但我認為您想要這樣的東西:
for(count1 = 1; count1 <= rows; count1++) {
for (count2 = 1; count2 <= columns; count2++) {
System.out.print(symbol);
}
System.out.println();
}
您的初始代碼有兩個問題:
我想你想要這個:
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();
}
這將為您提供您想要的魔術盒。
該鏈接可能幫助您看到差異: 省略花括號的stackoverflow問題
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