Delete [] Str

Delete [] STR can only be recycled new []; The two must appear in pairs.

Char * P = "sdfgsdg ";

Delete [] P; // this operation is incorrect. P points to the regular storage area and cannot be modified. An error is reported in the program.

Remember that delete and new appear in pairs. Delete [] and new [] appear in pairs.

When initializing variables in the class, for example, the class contains the member variable char * STR;

Use new [] In constructor and copy constructor so that Delete [] can be used in destructor.