7週目項目:任意に2つの数(実数)を入力し、それらの和差積商を求める

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/* 
 * Copyright (c) 2013,                
* All rights reserved. 
*      
* 2013    10 10    
* v1.0 
* 
*     :        ,         。
*     :6 3*     :sum=9sud=3mul=18div=2*     :        ,  double  ,  Numbers1 Numbers2,                */  
#include <iostream>
using namespace std;
int main()
{
       double    num1,num2,sum,sub,mul,div;
       cout<<"         "<<endl;
       cin>>num1>>num2;
       sum=num1+num2;
       sub=num1-num2;
       mul=num1*num2;
       div=num1/num2;
       cout<<"  ="<<sum<<endl;
       cout<<"  ="<<sub<<endl;
       cout<<"  ="<<mul<<endl;
       cout<<"  ="<<div<<endl;
       return 0;
 
 
}
    :  ,  ,   ,     !