Very newbie question

[FredrikN]

Hi, I'm new to C and I have a little problem with scanf funktion.

It seems that I only can get everything before a spece(if if exist) and the text after it.

eg

char text[30];
printf ("Enter some text"
scanf("%s", &text);
printf("\nYou wrote %s\n", text);


If I run this program och after the "Enter some text" prompt writes "Hello dude" it will only print out
"You wrote Hello"

How do I do if I want to print out all including the white spaces ??

Thanks

///Fredrik

 

[maschwa]

Hello Fredrik!

I think the better function for getting a string in a variable is gets() which is included in <stdio.h>.

for example:

#include <stdio.h>

void main(){
char var[20];
printf(&quot;Enter some text: &quot;
gets(var);
printf(&quot;%s&quot;,var);
}

But you must be careful with the length of var! It doesn´t matter how many whitespaces are in the input.

br maschwa

 

[FredrikN]

Hi maschwa.

I tried your code but I recived this warning:

/tmp/ccTduRFm.o: In function `main':
/tmp/ccTduRFm.o(.text+0x1e): the `gets' function is dangerous and should not be used.

It works fine with the whitespaces now, but what is the warning about ?
I'm using gcc 2.95.3

Thanks again

//Fredrik

 

[FredrikN]

Hi maschwa.

I tried your code but I recived this warning:

/tmp/ccTduRFm.o: In function `main':
/tmp/ccTduRFm.o(.text+0x1e): the `gets' function is dangerous and should not be used.

Maybee I only should use scanf ?

It works fine with the whitespaces now, but what is the warning about ?
I'm using gcc 2.95.3

Thanks again

//Fredrik

 

[jtm111]

scanf(&quot;%s&quot;, &text);

do not pass the address of text, for a character array just use the name of the array:

scanf(&quot;%s&quot;, text);

 

[maschwa]

Hi Fredrik!

I tried to compile with 16bit Borland-compiler and 32bit DeveloperStudio. There was no warning in both cases. I tried the code of jtm111 but it doesn´t work with whitespaces, too.

Br maschwa

 

[FredrikN]

Okej, thanks 2 both of you.

//Fredrik

 

[Guest_imported]

You must use fgets();

type &quot;man gets&quot; (if on unix/linux), it will tell you why gets() is dangerous.