(c = getchar()) Under what circumstances will it be equal to EOF?

QWE4562009

(c = getchar()) Under what circumstances will it be equal to EOF? [Copy link]

 

(c = getchar()) Under what circumstances will it be equal to EOF?

lcofjp

The console input shortcut keys are ctrl+z or ctrl+d. I can’t remember which one it is. They are different for Unix and Windows systems.

QWE4562009

lcofjp posted on 2020-7-17 11:54 The console input shortcut key is ctrl+z or ctrl+d. I can't remember which one it is. Unix and Windows systems are different.

Console input shortcut keys ctrl+z or ctrl+d----------------Do you mean that pressing trl+z or ctrl+d in the console interface will exit the above loop statement?

QWE4562009

lcofjp posted on 2020-7-17 11:54 The console input shortcut key is ctrl+z or ctrl+d. I can't remember which one it is. Unix and Windows systems are different.

Since there are bitwise AND and logical AND, are there also bitwise OR and logical OR, bitwise XOR and logical XOR?

lcofjp

QWE4562009 posted on 2020-7-17 14:23 Since there are bitwise and and logical and, are there also bitwise or and logical or, bitwise xor and logical xor? &n ...

There is no logical XOR operator, but all others are available. Look at the table yourself.

damiaa

&& Logical AND, which can be understood as AND.

|| Logical or, which can be understood as either, that is, the condition can be either

! Logical NOT (unary expression)

Not having this ^^ haha.

freebsder

I have a very creative mind. I also thought about this question at that time.

huo_hu

#defineEOF(-1)

huo_hu

QWE4562009 posted on 2020-7-17 14:23 Since there are bitwise and and logical and, are there also bitwise or and logical or, bitwise exclusive or and logical exclusive or? &n ...

Bitwise AND & Logical AND &&

Bit inversion~Logical inversion!

Bitwise XOR^Logical XOR is ==

QWE4562009

huo_hu posted on 2020-7-18 19:34 QWE4562009 posted on 2020-7-17 14:23 Since there are bitwise and and logical and, are there also bitwise or and logical or &n ...

Where is this return value 1 reflected?

freebsder

QWE4562009 posted on 2020-7-20 14:20 Where is this return value 1 reflected

a = (b == c); You can see the value of a.

QWE4562009

freebsder posted on 2020-7-20 14:27 a = (b == c); You can see the value of a.

What does the bracket mean to determine whether b is equal to c? If b is equal to C, then a is 1, otherwise a=0?

freebsder

QWE4562009 posted on 2020-7-20 14:45 What does the bracket mean to determine whether b is equal to c? If b is equal to C, then a is 1, otherwise a=0?

Yes. The result in the brackets here is the result in the if () brackets you saw in the previous post.