Question on sscanf

[Dan Smith]

Ok, I'm stumped. Either sscanf is broken or I'm not understanding
somthing. Probably the later. Hopefully someone here can help me out
with this before I chew my own leg off.

First what I'm trying to do:

I have a line in a text file that looks like

'TYPEBE','P6','FFGHT'

and I'm trying to get the data in the between the first two quote marks
into to strings for use later in the program.


The code I'm using is:

char line[600];
char string1[7];
char string2[7];

.....

fgets (line,256,xiresults_file);
sscanf (line,"%*c%[^']s%*c%*c%*c%[^']s",string1,string2);

.....

This code sets string1 to TYPEBE, but string 2 is not being set to P6
as I expected it to. I'm probably doing something wrong, but I
just can't figure out what. Thanks in advance for the help

 

[Jirka Klaue]

Ok, I'm stumped. Either sscanf is broken or I'm not understanding
somthing. Probably the later. Hopefully someone here can help me out
with this before I chew my own leg off.

First what I'm trying to do:

I have a line in a text file that looks like

'TYPEBE','P6','FFGHT'

and I'm trying to get the data in the between the first two quote marks
into to strings for use later in the program.

The code I'm using is:

char line[600];
char string1[7];
char string2[7];

....

fgets (line,256,xiresults_file);
sscanf (line,"%*c%[^']s%*c%*c%*c%[^']s",string1,string2);

^ ^^
%[] and %s are distinct conversion specifiers.

sscanf(s, "%*c%[^']%*c%*c%*c%[^']s", string1, string2);
or
sscanf(s, "%*c%[^']%*3s%[^']s", string1, string2);

Jirka

 

[Jirka Klaue]

I wrote:
....

sscanf(s, "%*c%[^']%*c%*c%*c%[^']s", string1, string2);

^

sscanf(s, "%*c%[^']%*3s%[^']s", string1, string2);

^
Forgot do delete these s', too.

Jirka

 

[Martin Ambuhl]

Ok, I'm stumped. Either sscanf is broken or I'm not understanding
somthing. Probably the later. Hopefully someone here can help me out
with this before I chew my own leg off.

First what I'm trying to do:

I have a line in a text file that looks like

'TYPEBE','P6','FFGHT'

and I'm trying to get the data in the between the first two quote marks
into to strings for use later in the program.


The code I'm using is:

char line[600];
char string1[7];
char string2[7];

....

fgets (line,256,xiresults_file);
sscanf (line,"%*c%[^']s%*c%*c%*c%[^']s",string1,string2);

....

This code sets string1 to TYPEBE, but string 2 is not being set to P6
as I expected it to. I'm probably doing something wrong, but I
just can't figure out what.

Mainly, it's that you have extraneous literal 's's in your format string.

#include <stdio.h>


int main(void)
{
char line[] = "'TYPEBE','P6','FFGHT'";
char String1[7];
char String2[7];
sscanf(line, "'%[^']','%[^']", String1, String2);
printf("Input line: \"%s\"\n", line);
printf("Substrings: \"%s\" and \"%s\"\n", String1, String2);
return 0;
}


Input line: "'TYPEBE','P6','FFGHT'"
Substrings: "TYPEBE" and "P6"