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//ÎÊÌâÃèÊö:  Write a function upper that is passed a string argument by reference and converts
//   the lowercase letters to uppercase. Characters that are not lowercase letters are
//   unchanged.
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//×÷Õß:      ÑîÃ÷ÕÜ
//Íê³ÉÈÕÆÚ: 
//BUG±¨¸æ£»  dearymz@163.com
#ifndef TOUPPER_H
#define TOUPPER_H
#include <string>
#include <stdlib.h>

namespace ymz
{
 void upper(std::string& str)
 {
  for(unsigned int i = 0; i < str.length(); i++)
  {
   str[i] = toupper(str[i]);
  }
 }
}
#endif

//-------------------------------

#include "toupper.h"
#include <iostream>

using namespace std;

void main()
{
 string str = "123abcdefgABCDEFG000";
 cout<<str<<endl;
 ymz::upper(str);
 cout<<str<<endl;
}