我是c#的初学者,我有一份功课,所以我需要你的帮助,这就是我现在所做的,
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SimpleCalculator{
class SimpleCalculator {
double number1;
double number2;
double result;
double stored;
Boolean isStored;
public SimpleCalculator() {}
public double Add()
{
result = (this.number1 + this.number2);
return result;
}
public double Subtract()
{
result = (this.number1 - this.number2);
return result;
}
public double Multiply()
{
result = (this.number1 * this.number2);
return result;
}
public double Divide()
{
result = ((this.number1) /( this.number2));
return result;
}
public double SquareRootNumber1()
{
result = Math.Sqrt(this.number1);
return result;
}
public double SquareRootNumber2()
{
result = Math.Sqrt(this.number2);
return result;
}
public Boolean isMemoryUsed()
{
if (this.stored == 0){
this.isStored=false ;
return isStored;
}
else
this.isStored = true;
return this.isStored;
}
public double MemoryStore(double paramater_store1) {
this.stored = this.stored + paramater_store1;
return this.stored;
}
public double MemoryRecall()
{
if (MemoryStore(this.stored)==0)
return 0;
else
return MemoryStore(this.stored);
}
public double MemoryAdd(double paramater_store2)
{
this.stored = this.stored + paramater_store2 ;
return this.stored;
}
public double MemorySubtract(double paramater_store3)
{
this.stored = this.stored - paramater_store3;
return this.stored;
}
public double MemoryClear()
{
return this.stored = 0;
}
static void Main(string[] args)
{
SimpleCalculator calc = new SimpleCalculator();
calc.number1 = 3.14;
calc.number2 = 5.78;
Console.WriteLine("A is {0}", calc.number1);
Console.WriteLine("B is {0}", calc.number2);
double result = calc.Add();
Console.WriteLine("A + B = {0}", result);
result = calc.Subtract();
Console.WriteLine("A - B = {0}", result);
result = calc.Multiply();
Console.WriteLine("A * B = {0}", result);
Console.WriteLine("Sqrt(A) = {0}", calc.SquareRootNumber1());
Console.WriteLine("Sqrt(B) = {0}", calc.SquareRootNumber2());
Console.WriteLine("A = {0}", calc.number1);
Console.WriteLine("B = {0}", calc.number2);
try
{
result = calc.Divide();
Console.WriteLine("A / B = {0}", result);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
calc.number1=3.14;
calc.number2=0 ;
Console.WriteLine("A is {0} ", calc.number1);
Console.WriteLine("B is {0} ", calc.number2);
result = calc.Divide();
try {
result = calc.Divide();
Console.WriteLine("A / B = {0}", result);
}
catch (Exception ex) {
Console.WriteLine("The divisor can’t be zero ",ex.Message);
}
Console.WriteLine("Is memory being used at the beginning? {0}", calc.isMemoryUsed());
calc.MemoryStore(3.16);
Console.WriteLine("Is memory being used after MemoryStore? {0}", calc.isMemoryUsed());
Console.WriteLine("Memory = {0}", calc.MemoryRecall());
calc.MemoryAdd(5.67);
Console.WriteLine("Is memory being used after MemoryAdd? {0}", calc.isMemoryUsed());
Console.WriteLine("Memory = {0}", calc.MemoryRecall());
calc.MemorySubtract(7.89);
Console.WriteLine("Is memory being used after MemorySubtract? {0}", calc.isMemoryUsed());
Console.WriteLine("Memory = {0}", calc.MemoryRecall());
calc.MemoryClear();
Console.WriteLine("Is memory being used after MemoryClear? {0}", calc.isMemoryUsed());
calc.MemoryAdd(5.67);
Console.WriteLine("Is memory being used after MemoryAdd? {0}", calc.isMemoryUsed());
Console.WriteLine("Memory = {0}", calc.MemoryRecall());
calc.MemoryClear();
Console.WriteLine("Is memory being used after MemoryClear? {0}", calc.isMemoryUsed());
calc.MemorySubtract(7.89);
Console.WriteLine("Is memory being used after MemorySubtract? {0}", calc.isMemoryUsed());
Console.WriteLine("Memory = {0}", calc.MemoryRecall());
}
}
}
问题是,我得错了结果:this is my result but the answers must be different!!
!!!!!!
BUT, It should be like this
有些方法应具备这些功能:
以下是一些重要问题:
Add()方法添加Number1和Number2并返回结果。
Subtract()方法从Number1中减去Number2并返回结果。
Multiply()方法将Number1和Number2相乘并返回结果。
Divide()方法检查Number2是否为零。如果Number2为零,它应抛出一个异常,并显示消息“由于Number2为零,因此无法完成分区!”。如果Number2不为零,则应该返回除法结果。
SquareRootNumber1()和SquareRootNumber2()方法分别返回Number1和Number2的平方根。
如果计算器的内存中存在存储的值,则isMemoryUsed()方法应返回true,如果内存中没有存储的值,则返回false。
MemoryStore(double)方法将参数值存储到内存中。
MemoryRecall()方法返回内存的值。如果内存中没有存储值,则应返回零。
MemoryAdd(double)方法将参数值添加到内存中。
MemorySubtract(double)方法从内存中减去参数值。
MemoryClear()方法清除内存中的值。
调用MemoryStore,MemoryAdd和MemorySubtract方法时,值存储在内存中,然后isMemoryUsed()方法应返回true。调用MemoryClear()方法后,isMemoryUsed()方法应返回false。 MemoryRecall()方法不会更改isMemoryUsed()方法返回的值。
您的程序应该为上面给出的程序提供相同的输出。
仔细指定成员变量及其可见性(公共或私人)。
答案 0 :(得分:1)
意外的结果是你测试一下内存,对吧?
1)MemoryStore不存储参数,它将参数添加到当前内存中,是你想要的?
2)记忆回忆如下:
public double MemoryRecall()
{
if (MemoryStore(this.stored)==0)
return 0;
else
return MemoryStore(this.stored);
}
它与:
相同public double MemoryRecall()
{
return MemoryStore(this.stored);
}