重载等号操作符

    技术2022-07-12  104

    结论:先释放旧的内存,在返回一个引用

    Name &operator=(Name &obj1) { //先释放旧的内存 if(m_p!=NULL) { delete []m_p; m_len=0; }

    //根据obj1分配内存大小 this.m_len=obj1.m_len; this.m_p=new char[m_len+1]; //把obj1赋值 strcpy(m_p,obj1.m_p); return *this;

    }

    Processed: 0.013, SQL: 9