读入文本分隔文件C

Question

Still in the fiddling stage with C. Not sure what I'm doing wrong here but I think it has to do with pointers. Anyway. I'm trying to read in and parse a tab-delimited text file into a 2D array. The actual array is 6109 x 14, I allotted a bigger pointer array.

FILE *in = fopen("afile","rt");
// read the first line from the file
char line[2000];
int x=0;
int y=0;
char *result[7000][14];
char *curResult;
char delim[]= "\t";

while (fgets(line, 2000, in) != NULL) {
    printf("LINE IS %s\n",line);
    curResult=NULL;
    curResult = strtok(line,delim);
    y=0;
    while( curResult != NULL ) {
        result[x][y]= curResult;
        curResult = strtok( NULL, delim );
        y++;
    }
    x++;
}

//print a random line to check 
for(int i=0; i<10; i++)
    printf("%s\n", result[50][i]);

The line I printed at the bottom which should be the 50th line prints the last line of the text file. I tried this with different numbers instead of 50 but they all print the same thing.

EDIT: afile looks like this:

  instance_id   batch_id    cmap_name   INN1    concentration (M)   duration (h)    cell2   array3  perturbation_scan_id    vehicle_scan_id4    scanner vehicle vendor  catalog_number  catalog_name
1   1   metformin   INN 0.00001 6   MCF7    HG-U133A    EC2003090503AA  EC2003090502AA  HP GeneArray Scanner    medium  Sigma-Aldrich   D5035   "1,1-dimethylbiguanide hydrochloride"
2   1   metformin   INN 0.00001 6   MCF7    HG-U133A    EC2003090504AA  EC2003090502AA  HP GeneArray Scanner    medium  Sigma-Aldrich   D5035   "1,1-dimethylbiguanide hydrochloride"
3   1   metformin   INN 0.0000001   6   MCF7    HG-U133A    EC2003090505AA  EC2003090502AA  HP GeneArray Scanner    medium  Sigma-Aldrich   D5035   "1,1-dimethylbiguanide hydrochloride"
4   1   metformin   INN 0.001   6   MCF7    HG-U133A    EC2003090506AA  EC2003090502AA  HP GeneArray Scanner    medium  Sigma-Aldrich   D5035   "1,1-dimethylbiguanide hydrochloride"
21  2   phenformin  INN 0.00001 6   MCF7    HG-U133A    EC2003091104AA  EC2003091102AA  HP GeneArray Scanner    medium  Sigma-Aldrich   P7045   phenformin hydrochloride
22  2   phenyl biguanide        0.00001 6   MCF7    HG-U133A    EC2003091105AA  EC2003091102AA  HP GeneArray Scanner    medium  Sigma-Aldrich   P19906  1-phenylbiguanide hydrochloride
23  2   valproic acid   INN 0.001   6   MCF7    HG-U133A    EC2003091106AA  EC2003091102AA  HP GeneArray Scanner    medium  Sigma-Aldrich   P4543   2-propylpentanoic acid
61  2a  metformin   INN 0.00001 6   MCF7    HG-U133A    EC2003091103AA  EC2003091102AA  HP GeneArray Scanner    medium  Sigma-Aldrich   D5035   "1,1-dimethylbiguanide hydrochloride"

Answer 1

Imagine line is a big box where you can put a bunch of letters.
That's what you do with fgets() .

Next you point to specific letters inside that box.

Next you replace the contents of the box (another fgets() to the same variable line ) and the pointers, of course still point to the same box, but now to the new letters.

You need to copy the characters (with strcpy() , check that you have enough space first ) somewhere inside your loop.