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#2
最近不在2010-07-04 19:10
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程序代码：/* CppHead.h 文件*/
#include <iostream.h>
class ibm
{
public:
ibm(int = 0,int = 0);
friend ostream & operator+(ostream &a, ibm &);
private:
int x;
int y;
};
ibm ::ibm(int a, int b)
{
x = a; y = b;
}
ostream & operator +( ostream &output, ibm &b) //重载
{
output << b.x << " " << b.y << endl;
return output;
}
///////////////////////////////////////////////////////
#include "CppHead.h"
int main(void)
{
ibm t(100, 200);
cout << t;
return 0;
}
编译的时候提示：E:\练习文件\【C++】\CPP\CPP.CPP(9) : error C2679: binary '<<' : no operator defined which takes a right-hand operand of type 'class ibm' (or there is no acceptable conversion)#include <iostream.h>
class ibm
{
public:
ibm(int = 0,int = 0);
friend ostream & operator+(ostream &a, ibm &);
private:
int x;
int y;
};
ibm ::ibm(int a, int b)
{
x = a; y = b;
}
ostream & operator +( ostream &output, ibm &b) //重载
{
output << b.x << " " << b.y << endl;
return output;
}
///////////////////////////////////////////////////////
#include "CppHead.h"
int main(void)
{
ibm t(100, 200);
cout << t;
return 0;
}
执行 cl.exe 时出错.
问题怎么解决呀？？