程序代码：

#include <iostream>
#include <ctime>
#include <cstdlib>
#include <assert.h>

const int M=100;
class somes{
private:
  inline int randnum()
  {
    return rand()%99999+1;
  }
  inline void randnumInit()
  {
    srand((unsigned int)time(0));
  }
  char* Conversion(char* s1,char* s2,int n);
  char Mi[M];

 
public:
  somes(char* s);
  ~somes()
  {}
  inline char* returnMi()
  {
   
    //std::cout << "Mi:len " << strlen(Mi) << std::endl;
    //std::cout << "Mi:sizeof " << sizeof(Mi) << std::endl;
    return Mi;
  }


};
somes::somes(char* s)
{
  memset(Mi,0,sizeof(char)*M);
  randnumInit();
  assert(Conversion(Mi,s,randnum()));
}
char* somes::Conversion(char *s1, char *s2, int n)
{
  int i=0;
  while (*s2!='\0')
  {
    s1[i]=*s2^n;
    ++i;
    ++s2;
  }
  s1[i]='\0';
  return s1;

}