java 7个练习题
import java.util.Scanner;
public class YXY{
public static void main(String[] args){
long l=123456789012345l;
System.out.print("长整数的的值是:"+l+"\n");
float f=2.4f;
System.out.print("单精度的小数是:"+f+"\n");
boolean b=true;
b=false;
System.out.print("布尔型变量的值是:"+b+"\n");
byte c=3;
c=(byte)(c+200);
System.out.print(c);
System.out.print((char)('a'+1)+"\n");
System.out.print((char)('你'+1)+"\n");
int e=Integer.MAX_VALUE+1;
System.out.print(e);
@SuppressWarnings("resource")
Scanner input=new Scanner(System.in);
double t;
System.out.print("Enter the x "+"\n");
t = Double.valueOf(input.nextDouble());
t=t/1000*1000;
System.out.print("The calculation result is " + t +"\n");
}
}