switch 作業 ~~~JAVA

Question

1. 跟使用者要一個整數,利用 switch 指令判斷其為奇數或偶數




2. 向使用者要性別身高體重資料, 利用switch指令計算其體重是太重 剛好或太輕




3. 用switch將成績分群 90-99分A 80-89分B 70-79分C 60-69分D 60分以下F

Tao · Accepted Answer

看看是否符合妳的需求
有問題可以再提出

第一題:
try
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int a;

System.out.print("Enter Number:");
a = Integer.parseInt(br.readLine());

a=a%2;

switch(a)
{
case 0: System.out.println("Even");
break;

case 1: System.out.println("Odd");
break;
}
}
catch(NumberFormatException ex)
{
System.out.println("Please enter Number");
}
catch(Exception ex)
{
}

第二題:
try
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int height ,weight;

System.out.print("Height:");
height = Integer.parseInt(br.readLine());
height=height*height;

System.out.print("Weight:");
weight = Integer.parseInt(br.readLine());
weight=weight*10000;

int bmi=weight/height;

int _bmi=bmi/10;

System.out.println("Your BMI: "+ bmi);

switch(_bmi)
{
case 1: if(bmi>=18)
System.out.println("Normal Range");
else
System.out.println("Too Thin");

break;

case 2:
if(bmi<=24)
System.out.println("Normal Range");
else
System.out.println("Too Fat");

break;

default: System.out.println("You must be Sick!!");

}

}
catch(NumberFormatException ex)
{
System.out.println("Please enter Number");
}
catch(Exception ex)
{
}


第三題:

try
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int  score;

System.out.print("Enter Score:");
score = Integer.parseInt(br.readLine());

String grade="F";

switch(score/10)
{
case 9: grade="A";
break;

case 8:grade="B";
break;

case 7: grade="C";
break;

case 6: grade="D";
break;
}

System.out.println("You Grade: "+grade);

}
catch(NumberFormatException ex)
{
System.out.println("Please enter Number");
}
catch(Exception ex)
{
}

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switch 作業 ~~~JAVA

1 Answer