C++ allows the char, int, and double data types to have modifiers preceding them. A modifier is used to alter the meaning of the base type so that it more accurately fits the needs of various situations. The data type modifiers are listed here:
signed
unsigned
long
short
The modifiers signed, unsigned, long and short can be applied to integer base types. In addition, signed and unsigned can be applied to char, and long can be applied to double. The modifiers signed and unsigned can also be used as prefix to long or short modifiers.
For example, unsigned long int.
C++ allows a shorthand notation for declaring unsigned, short, or long integers. You can simply use the word unsigned, short or long, without the int.
The int is implied.
For example, the following two statements both declare unsigned integer variables, unsigned x; unsigned int y;
