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#include "mystring.h"
#include <ctype.h>
mystring mystring::upper() const
{
const unsigned length = rep->length;
char buf[length+1];
const char* in = rep->buf + length;
bool changed = false;
for(char* out = buf+length; out >= buf; in--, out--)
if(islower(*in)) {
*out = toupper(*in);
changed = true;
}
else
*out = *in;
if(!changed)
return *this;
else
return mystring(buf, length);
}
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