问题描述
- 烦请各位大神给小妹瞅瞅
-
#include
using namespace std;
class xx
{
public:
xx()
{
quantity=0;
price=0;
}
void total();
static float average();
static void display();
private:int quantity; float price; static double discount; static float sum; static int n;
};
void xx:: total()
{if(quantity>=10) price=0.98*price; sum=quantity*price; n+=quantity;
}float xx::average()
{
return(sum/n);
}
double xx::discount=0.98;
float xx::sum=0;
int xx::n=0;
void xx::display()
{
cout<<"sum:"<<sum<<" "<<"average:"<<xx::average()<<endl;
}
int main()
{
xx t1[3]={xx(5,23.5),
xx(12,24.56),
xx(100,21.5),
}
t1[0].total ();t1[1].total (); t1[2].total (); t1.display(); return 0;
}
问题;C:UsersdellDesktop8.cpp(42) : error C2661: 'xx::xx' : no overloaded function takes 2 parameters
解决方案
因为楼主下面xx(5,23.5)是这样创建对象的,但又没有重载的构造函数满足,所以会报错
在类xx里面定义一个这样的构造函数就行了
另外还有两个小地方要改一下,我都标注了
#include<iostream>
#include<string>
using namespace std;
class xx
{
public:
xx()
{
quantity=0;
price=0;
}
xx(int a, float b) //第一处问题
{
quantity = a;
price = b;
}
void total();
static float average();
static void display();
private:
int quantity;
float price;
static double discount;
static float sum;
static int n;
};
void xx:: total()
{
if(quantity>=10)
price=0.98*price;
sum=quantity*price;
n+=quantity;
}float xx::average()
{
return(sum/n);
}
double xx::discount=0.98;
float xx::sum=0;
int xx::n=0;
void xx::display()
{
cout<<"sum:"<<sum<<" "<<"average:"<<xx::average()<<endl;
}
int main()
{
xx t1[3]={xx(5,23.5),
xx(12,24.56),
xx(100,21.5),
}; //第二处,少了分号
t1[0].total ();
t1[1].total ();
t1[2].total ();
t1[0].display(); //第三处
return 0;
}
时间: 2024-09-19 09:00:03