Some questions on sscanf and parsing data

Im working on a program that opens a file of student records and stores them in an array of structures.

My structure looks like this

Code:

typedef struct
	  {
	    char name[21];
	    char studentID[5];
	    int scoreOne;
	    int scoreTwo;
	    int scoreThree;
	    int scoreFour;
	    float average;
	    char grade;
	  } StuRec;

Right now im having trouble going through the data in the file and storing it.

The data looks like this

Code:

Cool, Joe:535987:100:43:68:88:C
Slacker, Rufus:734120:65:48:0:68:F
Smart, Maxwell:868686:55:64:99:99:C+

I am using a loop with fgets and sscanf, which will stop at each new line because of fgets and store the string in a buffer then im trying to use sscanf to go through the buffer data and pull out what I need.

I can get through the name and student id(the first two pieces of data separated by : ) but am stuck on how to store the next four scores.

My code for the first part is

Code:

sscanf(buffer, "%20[^:]%[:]%6[^:]%[:]", stuAry[i].name, stuAry[i].studentID);

It should read up to 20 characters or stop at a colon. Then skip the colon and read 6 more or stop at the next colon. This is where im starting to get lost. I need to find the average of the next four numbers to be part of my structure as well. What is the best way to read in these numbers so I can also find their average? Additionally the scores can have a range from 0 to 150

I think I can get through the letter grade at the end. I was thinking of something like

Code:

%2[ABCDF+-]

or even just simply

Code:

%2s

thanks

And %d doesn't work because?

can I use the same string conversions with %d? Im really new with this...

something like?

Code:

%3[^:]d

No. Fortunately you don't want to, since %d will stop at a colon anyway, without your help.

wooo thanks a lot ill give this another shot now

Your struct has some problems, too. studentID should be longer and so should grade. Try this sscanf line:

Code:

sscanf(buffer, "%[A-za-z ,]:%[0-9]:%d:%d:%d:%d:%s",StuRec.name,StuRec.studentID,
            &StuRec.scoreOne,&StuRec.scoreTwo,&StuRec.scoreThree,
            &StuRec.scoreFour,StuRec.grade);

thanks guys

MK27 that was it. I was making things WAY harder than I needed to. Thanks a lot

Originally Posted by green2black

thanks guys

MK27 that was it. I was making things WAY harder than I needed to. Thanks a lot

Some of the sscanf documentation I've seen is very heavy on possibilities, yet extremely lite on examples, so this isn't surprising.