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Error overloading operator

Dec 6, 2011 at 2:19pm
jigneshdgreat (8)
I am getting this error "<< operator function should take two parameters"
I wanted to overload << operator so as to work like "cout<<s;" where s is a string object
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#include<iostream.h>
#include<conio.h>
#include<string.h>
class string
{
	char *name;
	int length;
	public:
	string()
	{
	}
	string(char *s)
	{   	
		length=strlen(s);
		name=new char[length+1];
		strcpy(name,s);
	}
	friend void operator<<(string m);
	};
void operator<<(string m)
{
	cout<<m.name;
}
int main()
{
	string s1("hello world");
	<<s1;
	return 0;
}
Edit & run on cpp.sh
Last edited on Dec 6, 2011 at 2:21pm
Dec 6, 2011 at 2:41pm
Gaminic (1621)
You say you want to overload an operator, but you're doing it as if you want to define a function. There's a big difference in both syntax and meaning.

Here's a tutorial on overloading the inserter operator:
http://www.java2s.com/Tutorial/Cpp/0200__Operator-Overloading/Useafriendtooverload.htm
Dec 6, 2011 at 3:32pm
bluecoder (763)
You are putting in the wrong way . you cannot create string class as string is the data type.
Dec 6, 2011 at 5:40pm
LB (13399)
Use <iostream> and not <iostream.h>
Don't use <conio.h>
Use <string> and not <string.h>, or if you want to call your class lowercase "string" then don't include the string header at all.

As for your smaller problem, it has already been answered above.
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