One row is skipped each time the program scans a matrix from file !

Question

Hello there,

I had this code working yesterday, but it seems like I edited it a bit and lost the working version. I cant get this to work anymore.

I basically want to scan a matrix from a .txt file. But each time it scans the first row, the second one is skipped, and it reads the third instead :(

Here is my code :

for(i=0;i<=test->rowmat1;i++){
      for(j=0;j<=test->colmat1;j++){
        fscanf(fin,"%f\t",&test->mat[i][j]);                                   
      }
     fscanf(fin,"%*[^\n]",&test->mat[i][j]);
   }

For example, for a matrix of :

1.00    2.00    3.00    
4.00    5.00    6.00    
7.00    8.00    9.00    
10.00   11.00   12.00   

If I extract 3 rows and 3 cols, I get :

1.00    2.00    3.00
7.00    8.00    9.00    

Then fails, it wants to skip over the second line but there is nothing after 10 11 12

Why did it stop working ? What do I have wrong ?

@Derek: removing the second scanf, I get for extracting 3 by 3 matrix

1.00    2.00    3.00    
4.00    5.00    6.00    
7.00    8.00    9.00    
10.00   11.00   12.00   

1.00    2.00    3.00    
5.00    6.00    7.00
9.00       10.00    11.00

Last digit is skipped :S

Please help, Thanks in advance.

Answer 1

Hi, not an expert on c at all. But when you go to do the second fscand() after the inner loop, won't j be equal to 3?, not 2. How does that effect the fscanf() ?