四则运算
public class calc
{
public String oper(float a,float b,char c)
{
float add=a+b;
float jian=a-b;
float chen=a*b;
float chu=a/b;
switch(c)
{
case '+':
return "想加的结果为:"+add;
case '-':
return "想减的结果为:"+jian;
case '*':
return "想乘的结果为:"+chen;
case '/':
return "想除的结果为:"+chu;
default :
return "出错了";
}
}
public static void main(String args[])
{
float a=100;
float b=25;
calc c=new calc();
String result=c.oper(a,b,'/');
System.out.println(result);
}
}