字符串链接和复制

// char szAry[20], char* lpStr2 = "xx";
char* MyStrcat2(char* lpStr1, const char* lpStr2)
{
  char* lpStrTemp = lpStr1;
  while(*lpStrTemp)
    lpStrTemp++;


  while(*lpStrTemp++ = *lpStr2++);

  return lpStr1;
}

char* MyStrcpy2(char* lpStr1, const char* lpStr2)
{
  char* lpStrTemp = lpStr1;
  
  while(*lpStrTemp++ = *lpStr2++);
  
  return lpStr1;
}

调用

int main(int argc, char* argv[])
{
  char szDstStr[128]  = "Hello";
  char* lpStr2  = "World!";
  char* lpStr3 = "xx"; 
  
  
  cout << MyStrcat2(szDstStr, lpStr2) << endl;
  cout << MyStrcpy2(szDstStr, lpStr3) << endl;
  
  return 0;
}