java中是否有命令使程序返回到循环的开头
我正在尝试用java制作一个类似于打字冒险的游戏,但是我需要一个至少与标题中的命令类似的命令,下面是代码java中是否有命令使程序返回到循环的开头,java,loops,command,switch-statement,Java,Loops,Command,Switch Statement,我正在尝试用java制作一个类似于打字冒险的游戏,但是我需要一个至少与标题中的命令类似的命令,下面是代码 import java.util.Scanner; public class MyFirstGameInJava { public static void main(String[] args) { System.out.println("Greetings, Enter your name and you may start your quest!"); Scanner Userna
import java.util.Scanner;
public class MyFirstGameInJava {
public static void main(String[] args) {
System.out.println("Greetings, Enter your name and you may start your quest!");
Scanner Username = new Scanner(System.in);
String name = Username.nextLine();
System.out.println("Greetings " + name );
System.out.println("Welcome to an Unnamed Typing Advanture");
System.out.println("You find yourself on an island with very few trees, you can either hit a tree, or walk along");
String sc = Username.nextLine();
switch(sc){
case "Hit tree":
System.out.println("A coconut falls from the tree");
System.out.println("You can either eat the coconut or throw it");
break;
case "Walk":
System.out.println("You walk for a mile and find a village");
System.out.println("The village appears empty, you can either scream to see if anybody is there, or you can keep walking");
break;
default :
System.out.println("Nothing happens...");
}
String sc1 = Username.nextLine();
switch(sc1){
case "Eat coconut":
System.out.println("You ate the coconut and got poisoned");
System.out.println("You died...");
break;
case "Throw coconut":
System.out.println("By throwing the coconut, you awaken a tiger and he eats you");
System.out.println("You are dead");
break;
case "Scream":
System.out.println("As soon as you scream, a man shoots you down from a window from one of the houses");
System.out.println("You died...");
break;
case "Walk":
System.out.println("You walked through the village, and you find a boat and leave the island");
System.out.println("You win! Updates coming soon!");
break;
default:
System.out.print("Nothing happend");
}
}
}
每当用户键入非必需的内容时,就会出现默认情况,但我需要它返回到循环的开头,这样用户就可以键入其他情况之一。您可以使用
continue
语句继续下一次迭代
也就是说,我在示例代码中没有看到循环。您可以使用for
、while
或do/while
循环。循环至少执行一次——这通常是向用户提问时要执行的操作
这提供了for
循环中continue
语句的示例
for (int i = 0; i < max; i++) {
// interested only in p's
if (searchMe.charAt(i) != 'p')
continue;
// process p's
numPs++;
}
for(int i=0;i
使用继续代码>以无条件循环为例
while(true){/* your code*/}
你的问题作出了错误的假设。switch()
语句不是循环。这是一组if/else-if语句的简写,如:
if(sc1.equals("Eat coconut")) {
System.out.println("You ate the coconut and got poisoned");
System.out.println("You died...");
}
else if(sc1.equals("Throw coconut")) {
//and so on
要执行所需操作,需要实际的or循环。(链接将带您进入解释这两种结构的Java教程。)我的CS课程也遇到了同样的问题:我做了以下工作。首先,你需要使用一个循环。我使用了“while”循环
假设你的对话中有人问别人(比如武术大师问玩家)要什么,答案是“y”或“n”。但玩家输入一个“m”。这将产生一个错误。要解决这个问题,你需要做一些事情(一个循环),不断检查用户是否输入了有效的响应,并相应地继续程序。现在代码
//Ask if they want to see the rules.
System.out.println("Welcome Player One");
System.out.println("Would you like to read the rules of the gem?");
System.out.println("[y]Yes, please / [n]I know the rules."); //So you made it clear that the choices are 'y' or 'n' (yes or no).
//Decide if they hit yes or no.
char Response; //Variable to hold user response.
Scanner Console = new Scanner(System.in); //I don't know why, exactly, but you need this.
Response = Console.next().charAt(0); //Set response to the user input. A input field will appear.
while(true){ //Making the parameter 'true' makes the flow of the loop depend on the parameters in the if statements (I think).
if(Response == 'y' || Response == 'Y'){
System.out.println("Here are the rules:");
break; //break will make the flow exit the while loop (so you can continue adding the rest of your code).
}
else if(Response == 'n' || Response == 'N'){
System.out.println("Then let us continue:");
break;
}
else{
System.out.println("Would you like to read the rules of the gem?"
System.out.println("You have to enter (y)yes or (n)no...");
Response = Console.next().charAt(0); //Just like before, input field will appear to give them the chance to change their response to a valid one.
continue; //This has to be 'continue' so that the loop will continue to "check" for the value that needs to be input by the user.
}
}
希望这能有所帮助,干杯。不要太详细,更直截了当。我已经过多地解释了简单的答案
for(int i = 0; i <= 10; i++){
if(i == 4){
continue;
}
//Should skip 4 and print out 1,2,3,5,6,7,8,9,10
System.out.println(i);
}
for(int i=0;i代码中的循环在哪里?开关不是循环。将代码包装成while(true)
,然后,确定您希望用户键入什么才能退出,如果他们键入,请使用break
关键字