C, Filling a 2D array by tokenizing string - c

Question

I'm trying to fill a 2d array by comma seperated integers.
I have already allocated the space for a 3x3 array. Now, I'm trying to loop through each line of input text to grab integers and place them in the array.
Here is what I have so far:
char currLine[257];
char *token;
for(int i = 0; i < size; i++){
fgets(currLine, 257, inputFile);
for(int j = 0; j < size; j++){
}
}
The text is formatted as follows:
9,8,7
2,1,6
3,4,5
I can successfully grab each line, but from there I keep running into troubles. After I get each number, I of course want it to go into the [i][j] spot of the array. So the first line corresponds to [0] and the first value corresponds to [0][0].

Answer 1

Tokenizing the formatted text you provided is trivial. Take a look at the following code. You can change the code if your are targeting float numbers. In my code, I'm assuming integer numbers.
#include <stdio.h>
#include <string.h> /* strlen() & memset() */
#include <stdlib.h> /* atoi() */
void getNumbers(const char* ch, int *a, int *b, int *c)
{
int i;
int size = strlen(ch) + 1;
char ar[100];
int n[3];
int j = 0;
int k = 0;
for(i = 0; i < size; ++i){
if( ch[i] != ',' )
ar[j++] = ch[i];
if ( ch[i] == ',' || i == size-1) {
ar[j] = '\0';
n[k++] = atoi(ar);
memset(ar, 0, sizeof(ar));
j = 0;
}
}
*a = n[0];
*b = n[1];
*c = n[2];
}
int main()
{
char *num = "1256,524,765";
int n1,n2,n3;
getNumbers(num,&n1, &n2, &n3);
printf("%d %d %d\n", n1,n2,n3);
return 0;
}
The result is
1256 524 765