Question

如何用c语言实现CString的构造函数，析构函数和赋值函数

Answer 1

class AA
{
public:
AA(char* str)
{
if(m_str != null)
delete[] m_str;

m_str = new char[strlen(str)+1];
strcpy(m_str,str);
}
~AA()
{
if(m_str != NULL)
{
delete[] m_str;
m_str =NULL;
}
}
private:
char* m_str;
}