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24 lines
507 B
24 lines
507 B
package calculator;
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import java.util.Scanner;
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public class log {
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public log() {
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Scanner sc = new Scanner(System.in);
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System.out.println("请输入底数a");
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double a = sc.nextDouble();
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System.out.println("请输入真数x");
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double x = sc.nextDouble();
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if(x>0&&a>0&&a!=1)
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{
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double result = log(a,x);
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System.out.println("结果为:"+result);
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}
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else
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System.out.println("errors ");
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}
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public static double log(double a, double x){
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return Math.log(x) / Math.log(a);
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}
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}
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