?? keyboardtest.java
字號:
import java.io.*;
public class KeyboardTest{
public static void main(String args[]){
System.out.println("This is a example about keyboard inputting.");
String strObj = "0";
try
{
InputStreamReader inObj;
BufferedReader bufObj;
inObj = new InputStreamReader(System.in);
bufObj = new BufferedReader(inObj);
strObj = bufObj.readLine();
System.out.println("輸入的整數N為: "+strObj);
}catch(IOException e){
System.out.println("Exception: "+e);
}
int n = Integer.parseInt(strObj);
int multiNum;
multiNum = n*(n+1)/2;
System.out.println("1到N的和為: "+multiNum);
}
}
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