user-0 提问: C语言

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user: user-1
content: 希望对你有帮助：https://blog.csdn.net/it_xiangqiang/category_10581430.html 希望对你有帮助：https://blog.csdn.net/it_xiangqiang/category_10768339.html

user: user-2
content: i % 2这个东西，要理解的话，一个表达式如果后面没有加i % 2 == xxx，则可以看做成立，即i % 2 成立可以表示为i % 2 ==1 ，即i除以2取的余数==1

user: user-3
content: 引用 7 楼 是疗伤烧肉粽~ 的回复:if（i%2）相当于 if（i%2!=0） 也就是当i%2不等于0时执行if（i%2）也就是奇数时执行，偶数时执行else

user: user-3
content: if（i%2）相当于 if（i%2!=0） 也就是当i%2不等于0时执行

user: user-4
content: 翻译一下，就是if（i是奇数）。 因为，%是求余数运算，当i是奇数时，I%2=1，偶数时为0

user: user-5
content: //C++ Operators //  Operators specify an evaluation to be performed on one of the following: //    One operand (unary operator) //    Two operands (binary operator) //    Three operands (ternary operator) //  The C++ language includes all C operators and adds several new operators. //  Table 1.1 lists the operators available in Microsoft C++. //  Operators follow a strict precedence which defines the evaluation order of //expressions containing these operators.  Operators associate with either the //expression on their left or the expression on their right;    this is called //“associativity.” Operators in the same group have equal precedence and are //evaluated left to right in an expression unless explicitly forced by a pair of //parentheses, ( ). //  Table 1.1 shows the precedence and associativity of C++ operators //  (from highest to lowest precedence). // //Table 1.1   C++ Operator Precedence and Associativity // The highest precedence level is at the top of the table. //+------------------+-----------------------------------------+---------------+ //| Operator         | Name or Meaning                         | Associativity | //+------------------+-----------------------------------------+---------------+ //| ::               | Scope resolution                        | None          | //| ::               | Global                                  | None          | //| [ ]              | Array subscript                         | Left to right | //| ( )              | Function call                           | Left to right | //| ( )              | Conversion                              | None          | //| .                | Member selection (object)               | Left to right | //| ->               | Member selection (pointer)              | Left to right | //| ++               | Postfix increment                       | None          | //| --               | Postfix decrement                       | None          | //| new              | Allocate object                         | None          | //| delete           | Deallocate object                       | None          | //| delete[ ]        | Deallocate object                       | None          | //| ++               | Prefix increment                        | None          | //| --               | Prefix decrement                        | None          | //| *                | Dereference                             | None          | //| &                | Address-of                              | None          | //| +                | Unary plus                              | None          | //| -                | Arithmetic negation (unary)             | None          | //| !                | Logical NOT                             | None          | //| ~                | Bitwise complement                      | None          | //| sizeof           | Size of object                          | None          | //| sizeof ( )       | Size of type                            | None          | //| typeid( )        | type name                               | None          | //| (type)           | Type cast (conversion)                  | Right to left | //| const_cast       | Type cast (conversion)                  | None          | //| dynamic_cast     | Type cast (conversion)                  | None          | //| reinterpret_cast | Type cast (conversion)                  | None          | //| static_cast      | Type cast (conversion)                  | None          | //| .*               | Apply pointer to class member (objects) | Left to right | //| ->*              | Dereference pointer to class member     | Left to right | //| *                | Multiplication                          | Left to right | //| /                | Division                                | Left to right | //| %                | Remainder (modulus)                     | Left to right | //| +                | Addition                                | Left to right | //| -                | Subtraction                             | Left to right | //| <<               | Left shift                              | Left to right | //| >>               | Right shift                             | Left to right | //| <                | Less than                               | Left to right | //| >                | Greater than                            | Left to right | //| <=               | Less than or equal to                   | Left to right | //| >=               | Greater than or equal to                | Left to right | //| ==               | Equality                                | Left to right | //| !=               | Inequality                              | Left to right | //| &                | Bitwise AND                             | Left to right | //| ^                | Bitwise exclusive OR                    | Left to right | //| |                | Bitwise OR                              | Left to right | //| &&               | Logical AND                             | Left to right | //| ||               | Logical OR                              | Left to right | //| e1?e2:e3         | Conditional                             | Right to left | //| =                | Assignment                              | Right to left | //| *=               | Multiplication assignment               | Right to left | //| /=               | Division assignment                     | Right to left | //| %=               | Modulus assignment                      | Right to left | //| +=               | Addition assignment                     | Right to left | //| -=               | Subtraction assignment                  | Right to left | //| <<=              | Left-shift assignment                   | Right to left | //| >>=              | Right-shift assignment                  | Right to left | //| &=               | Bitwise AND assignment                  | Right to left | //| |=               | Bitwise inclusive OR assignment         | Right to left | //| ^=               | Bitwise exclusive OR assignment         | Right to left | //| ,                | Comma                                   | Left to right | //+------------------+-----------------------------------------+---------------+

user: user-6
content: if(i%2)中，表达式 i%2 的结果为整数i对2求余后的结果，结果只有零值(当i为偶数时)和非零值(当i为奇数时)。结果为零（代表假）时，if语句的判断条件为假，所以不执行if后面的语句，而是执行else后面的语句；结果为非零值（代表真）时，if语句的判断条件为真，执行if后面的语句，而不执行else后面的语句。

user: user-7
content: 7%-5 =  2

user: user-7
content: 7%5  =  2 -7%5 = -2 7%-2 =  2 -7%-5= -2

user: user-8
content: 如i=4;那么i%2就等于0 if（i%2）一般用来判断那个数的奇偶性，i%2==0就说明是偶数，==1就说明i是奇数

user: user-8
content: i对2求余,就是数学里的余数,比如i=3;那么i%2就等于1.