mString

最新推荐文章于 2022-12-06 20:54:52 发布

原创最新推荐文章于 2022-12-06 20:54:52 发布 · 547 阅读

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#string #重写 #c++ #拷贝问题

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#include "mString.h"

mString::mString(const char* str /*= NULL*/)
{
	if (str == NULL)
	{
		m_data = new char(1);
		*m_data = '\0';
	}
	else
	{
		m_data = new char(strlen(str)+1);
		strcpy(m_data,str);
	}
}

mString::mString(const mString &other)
{
	m_data = new char(strlen(other.m_data)+1);
	strcpy(this->m_data,other.m_data);
}

mString::~mString(void)
{
	delete m_data;
}

mString & mString::operator=(const mString &other)
{
	if (this != &other )
	{
		int len = strlen(other.m_data);
		delete m_data;
		m_data = new char(len+1);

		strcpy(m_data,other.m_data);
	}

	return *this;
}

void mString::mPrintf()
{
	cout<<m_data<<endl;
}