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I am trying to allow the user to enter spaces in between words into my array, but I cannot figure out how to do it.
I am using the scanf function, I have tried the following code as it should accept whitespaces but it doesn't accept any characters.
I know this is probably quite an easy question but I can't find the answer in the tutorials or my C programming book, as it says this will work.
Code:
scanf("%c", surname);
Your current use of scanf is only reading one character. Consider using fgets instead. There's a FAQ on this topic (look above the blue bar, click FAQ).
Quzah.
you have char array with a string in it and want to allow the user to add more spaces between words?Quote:
I am trying to allow the user to enter spaces in between words into my array
or you want the user to enter a string with spaces and store it in the array?
is surname a pointer?Code:scanf("%c", surname);
did you mean %s
If you want to use scanf then try something likeBut using fgets would probably be the best option.Code:scanf("%20[^\n]", surname); //where 20 would be the max length
The above code should read exactly one character from stdin. To read more, you can put a number before the c, for however many characters you wish to read.
There are also functions gets() and fgets() for reading in newline terminating strings. gets() reads from stdin up to the first newline (as generated by pressing enter) character and replaces the newline with \0. But it can read more characters than your array can store, leading to buffer overflow errors. If can cause your program to crash or currupt your other data. fgets() is simmilar, but does does not replace the newline with \0. fgets() requires you to pass stdin as a file pointer to read from standard input. It avoids the problem of buffer overflow by an additional parramiter of the max number of characters to read.
That won't work. Strange thing about scanf is that it treats all whitespace the same. So your code is assentially the same as scanf("%20s", surname);.Quote:
Originally Posted by SirNot
No, look up that [ directive.Quote:
Originally Posted by King Mir
(But still prefer fgets.)
King, please change your name to: "Ignore me, I'm always wrong." Or at least put it in your sig as a warning to all those who don't know any better.
Quzah.
quzah, there's no reason to be like that, you can just agree that he is incorrect and move on.
Your opinion, not mine. You be you, I'll be me. I'm not trying to change you, so ........ off with your trying to change me. If you don't like my comments, put me on ignore.
Quzah.
I'm not trying to change you, I just like the forum to be a reasonaly amicable place, and calling someone "always wrong" is not something I feel helps this forum. I just like a friendly enviroment, rather than one where if someone makes a mistake they are jumped on. It's just common courtesy. Point out his mistake (as Dave_Sinkula did) and leave it there.
Yes, but they are always wrong. Thus, I'm going to be sure and tell everyone that, because people that don't know better, will assume they're correct. Which, they never are.Quote:
Originally Posted by manutd
Just like many teachers who teach incorrectly. It's fine if you read their advice, if you keep in mind that they're usually wrong.
Quzah.
Yeah, I swear I read somewhere that [^\n] will not work though. I can't find it now, so you're probably right.Quote:
Originally Posted by Dave_Sinkula
While you're looking, there's another directive that is not space-delimited. :)Quote:
Originally Posted by King Mir