Scanner scanner = new Scanner(System.in); System.out.print("请输入第一个数字: "); double num1 = scanner.nextDouble(); System.out.print("请输入第二个数字: "); double num2 = scanner.nextDouble(); System.out.print("选择运算符 (+, -, *, /): "); char operator = scanner.next()....
package cn.juwatech;import java.util.Scanner;public class Calculator {public static void main(String[] args) {Scanner scanner = new Scanner(System.in);System.out.println("Enter first number:");double num1 = scanner.nextDouble();System.out.println("Enter an operator (+, -, *, /):");c...
constexpruint32_toperator""_hash(constchar*str,size_t){returnhash(std::string_view(str));}//...
constexpruint32_toperator""_hash(constchar*str,size_t){returnhash(std::string_view(str));}//...
packagecn.juwatech;importjava.util.Scanner;publicclassCalculator{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.println("Enter first number:");doublenum1=scanner.nextDouble();System.out.println("Enter an operator (+, -, *, /):");charoperator=scanner.next()...
In conclusion, while the switch statement is a powerful tool for controlling the flow of your code, there are other options available in Java. Depending on your specific needs, you might find that if-else statements or the ternary operator are more suitable. ...
Scanner sc = new Scanner(System.in); System.out.println("请输入第一个数字:"); double num1 = sc.nextDouble(); System.out.println("请输入运算符号:"); String operator = sc.next(); System.out.println("请输入第二个数字:"); double num2 = sc.nextDouble(); ...
package cn.juwatech;import java.util.Scanner;public class Calculator { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.println("Enter first number:"); double num1 = scanner.nextDouble(); System.out.println("Enter an operator (+, -, *, /...
Also, preview featuresmightchange over two or more Java versions, until they are permanently added to the Java language. For example, when the Switch Expressions were introduced as a preview language feature in Java 12, its case label used the keywordbreakto return a value, which was later ch...
elif self.valueinargs:# 匹配成功 self.fall=TruereturnTrueelse:# 匹配失败returnFalse operator="+"x=1y=2forcaseinswitch(operator):#switch只能用于for...in...循环中ifcase('+'):print(x+y)breakifcase('-'):print(x-y)breakifcase('*'):print(...