Thread: scanf()

Code:

#include<stdio.h>
int main()
{
char c,d;
scanf("%c",&c);
scanf("%c",&d);
}

The enter key remains in the buffer for the above code, but it gets flushed automatically while receiving integers as in the code below..

Code:

int main()
{
int i,j;
scanf("%d",&j);
scanf("%d",&i);
}

Code:

#include <stdio.h>


int main()
{
int i;
scanf("%d\n",&i);
printf("%d", i);
getch();
}

in this code, you can will enter 2 integers first before it can output the first

Code:

#include <stdio.h>


int main()
{
int i;
scanf("%d",&i);
printf("%d", i);
getch();
}

unlike with this, it will automatically print the value of i.

any place where I could get the complete working of scanf, cause google ain't helping.

That's strange, it helped me find this link: scanf(), the third link.

Jim

Originally Posted by juice

any place where I could get the complete working of scanf, cause google ain't helping.

Did you look in your Pelles C Help file? It's all there...

Seriously... juice... how many times do you need to be told this?

Open POIDE... with your source code showing... click on the word scanf then press F1...

You will get this...



Part way down the page there is a link to fscanf, which gives you the rest of the story...



There you have everything scanf() can do in Pelles C.

And really... what is it with this stupid aversion people have to help files?

Originally Posted by Salem

Some rules:
1. Except for % conversions, each character stands for itself. So if you have scanf("abc"), you need to type in "abc" to proceed.
2. All white space characters (\n, \t, space etc) match any combination (and any length) of any characters where isspace() is true.
3. Skipping leading whitespace is for free - except as noted in post #7.
4. scanf stops when it a) reaches the end of the string, or b) when the input no longer matches the control string.

The consequence of all this is that if you have scanf("%d\n", &var); then you can enter 123 (say) AND as many spaces, tabs and newlines as you like. It will ONLY return when you type in some other non-whitespace character. All the whitespace will disappear from the input stream, and the first non-whitespace will be left on the input for the next input function to deal with.

That's exactly what I wanted. Thanks.

Originally Posted by CommonTater

Did you look in your Pelles C Help file? It's all there...

lately I've started to realize that the help file is indeed a helpful resource, but what salem told could not be found in the help file.

Originally Posted by CommonTater

Yes it is... look at the image in Message #8 ... most of what Salem said is right there...

Yes, most of it indeed is given in the help article for fscanf, I didn't read that. Thanks

Why does this statement terminate as soon as enter key is hit? Isn't it supposed to receive two multiword strings and store them in str1 and str2??

Code:

scanf("%[^\n]s %[^\n]s",str1,str2);