The?identifier?is only used to identify an entity uniquely in a program at the time of execution whereas, a?variable?is a name given to a memory location, that is used to hold a value.?Variable?is only a kind of?identifier, other kinds of?identifiers?are function names, class names, structure names, etc.
2016-03-08
C 語言規(guī)定，標(biāo)識(shí)符可以是字母(A～Z，a～z)、數(shù)字(0～9)、下劃線_組成的字符串，并且第一個(gè)字符必須是字母或下劃線。
變量就是可以變化的量，而每個(gè)變量都會(huì)有一個(gè)名字（標(biāo)識(shí)符）。
2020-07-24
The?identifier?is only used to identify an entity uniquely in a program at the time of execution whereas, a?variable?is a name given to a memory location, that is used to hold a value.?Variable?is only a kind of?identifier, other kinds of?identifiers?are function names, class names, structure names, etc.
2017-11-22
也就是兩個(gè)是一樣的？
2016-03-08
標(biāo)識(shí)符可以是字母(A～Z，a～z)、數(shù)字(0～9)、下劃線_組成的字符串，并且第一個(gè)字符必須是字母或下劃線。變量就是可以變化的量，而每個(gè)變量都會(huì)有一個(gè)名字（標(biāo)識(shí)符）。
2016-03-08
答案同上