39 lines
1.3 KiB
Java
39 lines
1.3 KiB
Java
package finalexam.StandardIO;
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import java.io.File;
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import java.io.FileWriter;
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import java.util.Scanner;
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public class FileIO {
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public static void main(String[] args) throws Exception {
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File fQ = new File("question.txt");
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File fA = new File("answer.txt");
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Scanner sc = new Scanner(fQ);
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FileWriter fw = new FileWriter(fA);
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while (sc.hasNextLine()) {
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String s = sc.nextLine();
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String[] arr = s.split("[\\(\\),]");
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double ans = 0;
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switch (arr[0]) {
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case "add":
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ans = Double.parseDouble(arr[1]) + Double.parseDouble(arr[2]);
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break;
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case "sub":
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ans = Double.parseDouble(arr[1]) - Double.parseDouble(arr[2]);
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break;
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case "max":
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ans = Math.max(Double.parseDouble(arr[1]), Double.parseDouble(arr[2]));
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break;
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case "min":
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ans = Math.min(Double.parseDouble(arr[1]), Double.parseDouble(arr[2]));
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break;
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case "doubleMe":
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ans = Double.parseDouble(arr[1]) * 2;
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break;
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}
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fw.write(s + "=" + ans + '\n');
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}
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fw.close();
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}
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}
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