strcmp of 2-D array

Expand Post »

Quick question:

I have a 2-D array called Training[693][19] of characters 0, 1 or 2 (yes characters, not integers). I'm trying to run an IF statement similar to this:

if (strcmp(Training[0][0], "1")==0)
{
printf ("Successful case \n ");
}

BUT, apparently the IF statement is wrong. I'm trying to determine if the first element in the Training array is "1". What am I doing wrong? I get a core dump whenever I run it. Can't I use "strcmp" like this? Please help!! I've been working on this for the last 2 days.

Similar Threads

idr1978

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

5 posts
since Nov 2004

Permalink

Nov 9th, 2004

Re: strcmp of 2-D array

>Can't I use "strcmp" like this?
Not if Training[0][0] is a character. strcmp compares strings, and a character is not a string. Use == instead:

C Syntax (Toggle Plain Text)
if ( Training[0][0] == '1' )
if ( Training[0][0] == '1' )

Alternatively you could use strncmp to compare a subset of the string, then use the address-of operator on the indexed array:

C Syntax (Toggle Plain Text)
if ( strncmp ( &Training[0][0], "1", 1 ) == 0 )
if ( strncmp ( &Training[0][0], "1", 1 ) == 0 )

But that's kind of stupid unless the string subset is either variable or large enough for a direct comparison to be impractical.

Narue

Administrator

Reputation Points: 6442

Solved Threads: 1393

Bad Cop

Offline

11,807 posts
since Sep 2004

Permalink

Nov 9th, 2004

Re: strcmp of 2-D array

Thank you sir. Worked great!!!

idr1978

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

5 posts
since Nov 2004

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in C Forum Timeline: Pointers (Part II)

Next Thread in C Forum Timeline: C function called interp?

DaniWeb Message

Cancel Changes

User Name
Password