You can use the comma operator to enter a series of expressions 可以使用逗号运算符输入一系列表达式:
Binary ` ` , ' ' is the comma operator . in scalar context it evaluates its left argument , throws that value away , then evaluates its right argument and returns that value 二元' , '为逗号操作符。在标量上下文中,它运行左边的参数,然后舍弃结果,运行右边的参数然后返回值。
In the C and C++ programming languages, the comma operator (represented by the token ,) is a binary operator that evaluates its first operand and discards the result, and then evaluates the second operand and returns this value (and type).