What is the difference between the unary minus operator and the binary subtraction operator?

一元操作符负号和二元操作符减号的区别是什么？

youdao

The subtract operator, however, is not commutative; therefore, you need two operations to handle the value to be subtracted and the value from which the subtraction will take place.

但是，减法运算符是不可交换的；所以，需要两个操作来处理减数和被减数。

youdao

The subtract operator, however, is not commutative; therefore, you need two operations to handle the value to be subtracted and the value from which the subtraction will take place.

但是，减法运算符是不可交换的；所以，需要两个操作来处理减数和被减数。

youdao