实验11_参考答案

double SimpleCalculator::add(double a,double b)const
{
return a + b;
}
double SimpleCalculator::substract( double a, double b ) const
{
return a - b;
}
double SimpleCalculator::multiply( double a, double b ) const
using namespace std;
int main()
{
double a=10.0;
double b=20.0;
SimpleCalculator sc;//声明SimpleCalculator类的对象sc
cout << "The value of a is: "<<a<<endl;
cout <<"The value of b is: " << b<< endl;
cout <<“Multiplying a and b yields“<< multiplication << endl;
/*写一条语句，声明变量division，通过SimpleCalculator类对象sc计算a/b，并将结果赋值给division变量*/
cout <<“Dividing a by b yields“<< division<< endl;
double substraction = sc.substract ( a, b );
cout << "Subtracting b from a "<< substraction << endl;
double multiplication = sc.multiply ( a, b );
cout << "Multiplying a and b yields "<< multiplication << endl;
{
return a * b;
}
double SimpleCalculator::divide(double a,double b)const
{
return a / b;
}
// CalcDriver.cpp
#include < iostream>
#include "SimpleCalculator.h"
{wenku.baidu.com
return a*b;
}
//补充divide方法的定义
// CalcDriver.cpp
#include < iostream>
#include“SimpleCalculator.h”
using namespace std;
int main()
{
double a=10.0;
double b=20.0;
// SimpleCalculator.h
class SimpleCalculator {
public:
/*补充add方法的原型声明*/
double subtract ( double, double ) const;
double multiply( double, double ) const;
/*补充divide方法的原型声明*/
实验
请将自己报告部分，文字和程序代码，加粗
完成下面实验内容和实验要求。
1．编程练习：简易计算器
⑴编写一个SimpleCalculator类，包含一些public方法来对两个double型变量进行加减乘除运算。
⑵实例输出：
⑶将下面程序代码补充完整，并运行（注意：共有3个文件：SimpleCalculator.h,SimpleCalculator.cpp,CalcDriver.cpp，此3个文件放到一个工程中进行调试）
};
// SimpleCalculator.cpp
#include“SimpleCalculator.h”
//补充add方法的定义
double SimpleCalculator::subtract( double a, double b ) const
{
return a–b;
}
double SimpleCalculator::multiply( double a, double b ) const
cout <<“Adding a and b yields“<< addition << endl;
double substraction = sc.substract ( a, b );
cout <<“Subtracting b from a“<< subtraction << endl;
double multiplication = sc.multiply ( a, b );
double multiply( double, double ) const;
double divide( double, double ) const;
/*补充divide方法的原型声明*/
};
// SimpleCalculator.cpp
#include "SimpleCalculator.h"
/*写一条语句，声明变量division，通过SimpleCalculator类对象sc计算a/b，并将结果赋值给division变量*/
//声明SimpleCalculator类的对象sc
cout <<“The value of a is:“<<a<<endl;
cout <<”The value of b is:“<< b<< endl;
/*写一条语句，声明变量addition，通过SimpleCalculator类对象sc计算a+b，并将结果赋值给addition变量*/
/*写一条语句，声明变量addition，通过SimpleCalculator类对象sc计算a+b，并将结果赋值给addition变量*/
double addition = sc.add ( a, b );
cout << "Adding a and b yields "<< addition << endl;
return 0;
}
①补充后代码：
// SimpleCalculator.h
class SimpleCalculator {
public:
/*补充add方法的原型声明*/
double add( double, double ) const;
double substract( double, double ) const;