e0411.java

java小程序

public class E0411
{
public static void main(String args[])
{
int a=Integer.parseInt(args[0]);
if((a>=0)&&(a<=59))
System.out.println("等级：F");
if((a>=60)&&(a<=69))
System.out.println("等级：D");
if((a>=70)&&(a<=79))
System.out.println("等级：C");
if((a>=80)&&(a<=89))
System.out.println("等级：B");
if((a>=90)&&(a<=100))
System.out.println("等级：A");
}
}