u012737225的专栏

1. Parenthesize expressions;2. When you change the value of an operand, do not use it elsewhere in the same expression. Reference:

1. *p=nullptr; (C++ 11)2. *p=0;3. *p=NULL; (include )

1. Define a pointer after the object to which it points has been defined.2. If not, initialize the pointer to nullptr or zero.Reference:C++ Premier (5th version)

Source from C++ Premier (5th version).use an unsigned type when you know that the values cannot be negative.use int for integer arithmetic.use long long when the data values are larger than the

In UNIX OS, in general, the EOF can be generated by typing CTRL+D;In WINDOWS OS, in general, the EOF can be generated by typing CTRL+Z.

Source from C++ Premier (5th version).non-bool to bool: bool=1 if non-bool != 0; bool=0 if non-bool ==0;bool to non-bool: non-bool=1 if bool==1; non-bool=0 if bool==0;float to int: truncate deci