mystring.h
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#ifndef __MYSTRING_H__
#define __MYSTRING_H__
#include <string.h>
#include <iostream>
class string
{
char *data;
unsigned len;
public:
string ():data (0), len(0)
{
};
~string ()
{
delete[]data;
};
string (const char *s)
{
if (s)
{
len=strlen(s);
data = new char[len + 1];
strcpy (data, s);
}
else
{
data = 0;
len = 0;
}
};
string (const string & src)
{
if (src.data)
{
data = new char[src.len + 1];
len = src.len;
strcpy (data, src.data);
}
else
{
data = 0;
len = 0;
}
};
string & operator= (const string & src)
{
if (this != &src)
{
delete[]data;
if (src.data)
{
data = new char[src.len + 1];
strcpy (data, src.data);
}
else
{
data = 0;
len = 0;
}
};
return *this;
}
};
#endif /* __string_H__ */