C + + syntax second basic type

Data type: The memory format that has been set.

Underlying data type:

Numeric type:

int N;   Used to hold a 16-bit integer byte  b;  An integer long l for saving 0-255   ;  Used to hold a 32-bit integer  double D;//For saving decimals, double precision.  float F;  Used to save decimals, single precision.

Logical Type:

bool b;  is used to save true or false, or it is real

The underlying type has a well-matched operation symbol.

One, numerical operation

int a,b,c;a=3; b=4; c=a*b;//conforms to arithmetic expression.    +,-,*,/,(,)

It is recommended that you do not allow different data types to appear within the same expression. You can see a lot of reasons less.

Two, numerical comparison operation

int b; BOOL f;a=ten; b=n; f=a<b;     <,>,<=,>=,==,!=; is greater than, less than, equal to, not equal to.

Three, logical operation

BOOL A,b,c;a=true; b=false; C=a| | b;   Back to Truec=a&&b;   Returns false

C + + syntax second basic type