list2-3.cpp

使用C++开发过程中

#include <string>
#include <iostream>


class mystring : public string{
public:
   mystring(char *X);
   void toUpper(void);
};



mystring::mystring(char *X) : string(X)
{
}

void mystring::toUpper(void)
{
    char *X;
    int N = length();
    int Index;
    X = new char[length()];
    strcpy(X,data());
    for(Index = 0;Index < N;Index++)
    {
       X[Index] = toupper(X[Index]);
    }
    replace(0,N,X,N);
    delete [] X;
}


void main(void)
{
   mystring X("started in lower case");
   X.toUpper();
   cout << X << endl;
}