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31 lines
710 B
31 lines
710 B
package calculator;
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import java.util.Scanner;
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public class cal4 {
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public cal4() {
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Scanner inScanner=new Scanner(System.in);
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System.out.print("请输入第一位运算数：");
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double a=inScanner.nextInt();
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System.out.print("请输入第二位运算数：");
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double b=inScanner.nextInt();
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System.out.print("请输入将要运算的运算符：");
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String op=inScanner.next();
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char ch=op.charAt(0);
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double sum=cala(a, b, ch);
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System.out.println("结果为:"+sum);
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}
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public static double cala(double x,double y,char op) {
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switch (op) {
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case '+': return x+y;
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case '-': return x-y;
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case '*': return x*y;
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case '/':
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if(y==0) return 0;
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else return x/y;
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default:
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return x;
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}
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}
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} |