Read comma separated numbers from a file in C - c

Question

I have a problem when trying to read a file with comma separated numbers, I want to have a function that creates arrays of integers (not knowing how many parameters the array has at first) in a file like this:
1,0,3,4,5,2
3,4,2,7,4,10
1,3,0,0,1,2
and so on. The result I want is something like
int v[]={1,0,3,4,5,2}
for every line in the file (obviously with the values in each line) so I can add this array to a matrix. I tried using fscanf, but I can't seem to make it stop at the end of each line. I also tried fgets, strtok, and many other suggestions I found on the Internet, but I don't know how to do it!
I'm using Eclipse Indigo in a 32-bit machine.

Answer 1

#include <stdio.h>
#include <stdlib.h>
int main(){
FILE *fp;
int data,row,col,c,count,inc;
int *array, capacity=10;
char ch;
array=(int*)malloc(sizeof(int)*capacity);
fp=fopen("data.csv","r");
row=col=c=count=0;
while(EOF!=(inc=fscanf(fp,"%d%c", &data, &ch)) && inc == 2){
++c;//COLUMN count
if(capacity==count)
array=(int*)realloc(array, sizeof(int)*(capacity*=2));
array[count++] = data;
if(ch == '\n'){
++row;
if(col == 0){
col = c;
} else if(col != c){
fprintf(stderr, "format error of different Column of Row at %d\n", row);
goto exit;
}
c = 0;
} else if(ch != ','){
fprintf(stderr, "format error of different separator(%c) of Row at %d \n", ch, row);
goto exit;
}
}
{ //check print
int i,j;
// int (*matrix)[col]=array;
for(i=0;i<row;++i){
for(j=0;j<col;++j)
printf("%d ", array[i*col + j]);//matrix[i][j]
printf("\n");
}
}
exit:
fclose(fp);
free(array);
return 0;
}

Answer 2

With the following code you will store the CSV into a multidimensional array :
/* Preprocessor directives */
#include <stdio.h>
#include <stdlib.h>
#define ARRAYSIZE(x) (sizeof(x)/sizeof(*(x)))
const char filename[] = "file.csv";
/*
* Open the file.
*/
FILE *file = fopen(filename, "r");
if ( file )
{
int array[10][10];
size_t i, j, k;
char buffer[BUFSIZ], *ptr;
/*
* Read each line from the file.
*/
for ( i = 0; fgets(buffer, sizeof buffer, file); ++i )
{
/*
* Parse the comma-separated values from each line into 'array'.
*/
for ( j = 0, ptr = buffer; j < ARRAYSIZE(*array); ++j, ++ptr )
{
array[i][j] = (int)strtol(ptr, &ptr, 10);
}
}
fclose(file);