英文:
How can i put the code in a loop because its not taking the input again
问题
while (true) {
System.out.print("Enter the number of rows ");
Scanner obj1 = new Scanner(System.in);
int ro = obj1.nextInt();
System.out.print("Enter the number of columns ");
int co = obj1.nextInt();
if ((ro > 2 && ro <= 10) && (co > 2 && co <= 10)) {
CLASS obj = new CLASS(ro, co);
break; // Exit the loop if input is correct
} else {
System.out.println("Error: Wrong input. Please enter again");
}
}
以上代码会将输入部分放入一个循环中，如果输入的行和列不满足要求，会显示错误消息并要求重新输入。当满足条件时，会创建一个名为"CLASS"的对象，并且循环会结束。
英文:
user will enter the row and column of the block. The number of rows and the number of columns should be an integer greater than 2 and less than or equal to 10. If any input is incorrect, show an error message and ask for that input again.
System.out.print("Enter the number of rows ");
Scanner obj1 = new Scanner(System.in);
int ro = obj1.nextInt();
System.out.print("Enter the number of columns ");
int co = obj1.nextInt();
if((ro > 2 && ro <=10) && (co > 2 && co <=10))
{
CLASS obj = new CLASS(ro,co);
}
else
{
System.out.println("Erro Wrong ipnut " + "Please enter again");
}
How can i put the above code in a loop because it only runs one time and not taking the input again when the wrong input is entered its just showing the message.
答案1
得分: 0
在Java中，有名为while和for的循环。请查看：https://www.geeksforgeeks.org/loops-in-java/
英文:
In Java, there are loops named while and for. Look at: https://www.geeksforgeeks.org/loops-in-java/
答案2
得分: 0
这个问题有点愚蠢，但这里有一个快速的解决方案：
while (true) {
System.out.print("输入行数 ");
Scanner obj1 = new Scanner(System.in);
int ro = obj1.nextInt();
System.out.print("输入列数 ");
int co = obj1.nextInt();
if((ro > 2 && ro <= 10) && (co > 2 && co <= 10)) {
CLASS obj = new CLASS(ro,co);
} else {
System.out.println("错误的输入。请重试。");
}
}
英文:
This question is kind of stupid but here's a quick solution anyways:
while (true) {
System.out.print("Enter the number of rows ");
Scanner obj1 = new Scanner(System.in);
int ro = obj1.nextInt();
System.out.print("Enter the number of columns ");
int co = obj1.nextInt();
if((ro > 2 && ro <=10) && (co > 2 && co <=10)) {
CLASS obj = new CLASS(ro,co);
} else {
System.out.println("Error wrong input. Please try again.");
}
}
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