import java.util.Scanner; public class AgeRate { public static void main(String[] args) { int young = 0; //记录年龄30岁(含)以下顾客的人数 int age = 0; //保存顾客的年龄 Scanner input = new Scanner(System.in); for(int i = 0; i
此示例使用keepGoing变量控制while循环的执行。当计数器大于5时,keepGoing被设置为false,循环将停止。 Boolean类型与对象 虽然boolean类型常用于基本条件判断,但在Java中也可以使用Boolean类来处理null值。这是因为boolean是基本数据类型,而Boolean是其对应的封装类。如下所示: BooleanisLoggedIn=null;if(isLoggedIn!=nul...
Since isJavaFun is true, the program prints "Java is fun!". Example 2: Boolean in a Loop public class BooleanLoopExample { public static void main(String[] args) { boolean keepRunning = true; int counter = 0; while (keepRunning) { System.out.println("Counter: " + counter); counter...
Example 3: Boolean in Loops public class BooleanLoopExample { public static void main(String[] args) { boolean keepRunning = true; int counter = 0; while (keepRunning) { System.out.println("Counter: " + counter); counter++; if (counter >= 5) { keepRunning = false; } } } } Power...
Transpose a matrix via pointer in C I'm trying to transpose a matrix in C while passing the matrix to a function and return a pointer to a transposed matrix. What am I doing wrong in the second while loop? in main create matrix transpos... ...
In following program, what is the purpose of the while loop? There are no problems with the compilation, but whether or not I have the while loop in place or not, the result is the same. I can't understand why the while loop is included. BTW, this is just an ex......
If the body of a while-loop or if-statement is made of many statements, then we use curly braces { } to group the statements in the body, as we have seen in many examples. However, if there is only a single statement in such a body, then the curly braces are optional. For exampl...
public class Main { public static void main(String[] args) { int number = 12345; // 需要检查的数字 boolean isEven = checkEven(number); System.out.println("位数是否为偶数:" + isEven); } public static boolean checkEven(int number) { int count = 0; while (number > 0) { count++; ...
a==128就发现是false，所以这时候会可能会很纳闷为啥不一样？当然jdk底层很多源码是值得每一个java从业...
In this loop, we create a sum from 100000 such amounts of money. $ java Main.java 146002.55 The calculation leads to an error of 2 euros and 55 cents. To avoid this margin error, we utilize theBigDecimalclass. It is used to hold immutable, arbitrary precision signed decimal numbers. ...