C语言中的符号（国外英文资料）.docVIP

C语言中的符号（国外英文资料） The symbol in C The operators type C operator can be divided into the following categories: The arithmetic operator For all kinds of numerical operations. Including the plus (+) and minus (-), multiply (*), in addition to (/), yu (or operator, %), since the increase (+ +), minus (-), a total of seven. The relationship operator For comparison. Including the greater than (), less than (), equal to (= =), greater than or equal to ( =), less than or equal to ( =), and is not equal to six (! =). Logical operators For logical operations. Including (), or (| |), not (!). Three. Bit operation operator The amount of the operation is performed by the binary digit. Including and (), or (|), not (~) and an exclusive or (^), left ( ), moves to the right ( ) six. The assignment operator Used for assignment operators, divided into simple assignment (=), composite arithmetic assignment (+ = - =, * = / =, % =) and compound operation assignment ( =, | = ^ =, , =, =) three categories, a total of 11 kinds. The conditional operator This is a triadic operator that is used for conditional evaluation (? :). The comma operator Used to combine several expressions into an expression (). The pointer operator To fetch the content (*) and take the address () two operations. Find the byte operator The number of bytes used to calculate the data type (sizeof). Special operators Parenthesis (), subscript [], member (-,.), etc. The data type of C Primitive type, type of structure, pointer type, empty type Classification and characteristics of basic types Type specification byte numeric range Character char 1 C character set Basic int 2-32768 ~ 32767 Short integer short int 2-32768 ~ 32767 Long integer long int 4-214783648 ~ 214783647 Unsigned unsigned 2 0 ~ 65535 Unsigned long integer unsigned long 4 0 ~ 4294967295 Single precision float 4 3/4e - 38 ~ 3/4e + 38 Double precision double 8 1/7E - 308 ~ 1/7E + 308 3. Constant suffix L or L long integer U or U has no sign F or F floati