sumab.java

来自「JAVA中输入10个数」· Java 代码 · 共 45 行

import java.io.*;

public class Sumab{
public static void main(String args[]) {
String s="";
int a=0;
int b=0;
try{
BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
System.out.print("please input a int a=");
s=in.readLine();
a=Integer.parseInt(s);
System.out.print("please input another int b=");
s=in.readLine();
b=Integer.parseInt(s);
}catch(IOException e){}
System.out.println("sum for  a to b is");

    int sum=a,i=1;
    System.out.println("\n******for statemen*******");
    
    for ( i=1;i<=b;i++)
    {sum=sum+1;}
    System.out.println("sum for a to b is"+sum);
   System.out.println("i is"+i);

    System.out.println("\n******while statemen******");
    int j=1;
    int suma=a;
    while(j<=b)
    {suma=suma+1;
     j=j+1;}
    System.out.println("sum for a to b is"+suma);
    
    System.out.println("\n******do while statemen******");
    int k=1;
    int sumb=a;
    do
    {
    sumb=sumb+1;
    k=k+1;
    }while(k<=b-1);
    System.out.println("sum for a to b is"+sum);
    }
}