Multiline CSV file to matrix in C - c

Question

I'm writing program to count scores.
The input file full list.txt looks like:
123456,11,24,,51,,12,,76,,,531,12,,,,24,56,,,,,118,,,,,,,,,,,,,,20,,,,,
123456,11,24,,51,,12,,76,,,531,12,,,,24,56,,,,,118,,,,,,,,,,,,,,20,,,,,
123456,11,24,,51,,12,,76,,,531,12,,,,24,56,,,,,118,,,,,,,,,,,,,,20,,,,,
123456,11,24,,51,,12,,76,,,531,12,,,,24,56,,,,,118,,,,,,,,,,,,,,20,,,,,
...
123456,11,24,,51,,12,,76,,,531,12,,,,24,56,,,,,118,,,,,,,,,,,,,,20,,,,,
The first number is ID, rest are scores. I was trying to put this file to matrix of c[42][1000] to count the total scores and arrange them in increasing order... But the problem I've faced is:
The program only counts the 1st line so far....
Any ideas how to make it store all of them?
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(void)
{
int lines_allocated = 1000;
int max_line_len = 150;
double c[42][1000];
char **words = (char **)malloc(sizeof(char*)*lines_allocated);
if (words==NULL)
{
fprintf(stderr,"Out of memory (1).\n");
exit(1);
}
FILE *fp = fopen("full list.txt", "r");
if (fp == NULL)
{
fprintf(stderr,"Error opening file.\n");
exit(2);
}
int i;
for (i=0;1;i++)
{
int j;
if (i >= lines_allocated)
{
int new_size;
new_size = lines_allocated*2;
words = (char **)realloc(words,sizeof(char*)*new_size);
if (words==NULL)
{
fprintf(stderr,"Out of memory.\n");
exit(3);
}
lines_allocated = new_size;
}
words[i] = (char*)malloc(max_line_len);
if (words[i]==NULL)
{
fprintf(stderr,"Out of memory (3).\n");
exit(4);
}
if (fgets(words[i],max_line_len-1,fp)==NULL)
break;
for (j=strlen(words[i])-1;j>=0 && (words[i][j]=='\n' || words[i][j]=='\r');j--)
;
words[i][j]='\0';
}
int j;
int k=i;
for(j = 0; j < k; j++)
{
printf("%s\n", words[j]);
char *pptr = words[j];
int l;
words[j][strlen(words)-1]=',';
for (l = 0; l < 41; l++)
{
char *ptr = strchr(pptr, ',');
if (ptr)
{
*ptr = 0;
c[l][j] = atof(pptr);
pptr = ptr + 1;
}
}
for (l = 0; l < 41; l++)
{
printf("%.2lf\n", c[l][j]);
}
return 0;
}
for (;i>=0;i--)
free(words[i]);
free(words);
return 0;
}
May be the matrix doesn't store any value at all.

Answer 1

BLUEPIXY, thanks for attention, solved =)
Was extra return 0.
However:
words[j][strlen(words)-1]=',';
or
words[j][strlen(words[j])-1]=',';
Does not affect the matrix. I have no idea why it does not, but it should, shouldn't it?
Final code is following:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(void)
{
int lines_allocated = 1000;
int max_line_len = 150;
double c[42][1000];
char **words = (char **)malloc(sizeof(char*)*lines_allocated);
if (words==NULL)
{
fprintf(stderr,"Out of memory (1).\n");
exit(1);
}
FILE *fp = fopen("full list.txt", "r");
if (fp == NULL)
{
fprintf(stderr,"Error opening file.\n");
exit(2);
}
int i;
for (i=0;1;i++)
{
int j;
if (i >= lines_allocated)
{
int new_size;
new_size = lines_allocated*2;
words = (char **)realloc(words,sizeof(char*)*new_size);
if (words==NULL)
{
fprintf(stderr,"Out of memory.\n");
exit(3);
}
lines_allocated = new_size;
}
words[i] = (char*)malloc(max_line_len);
if (words[i]==NULL)
{
fprintf(stderr,"Out of memory (3).\n");
exit(4);
}
if (fgets(words[i],max_line_len-1,fp)==NULL)
break;
for (j=strlen(words[i])-1;j>=0 && (words[i][j]=='\n' || words[i][j]=='\r');j--)
;
words[i][j]='\0';
}
int j;
int k=i;
for(j = 0; j < k; j++)
{
printf("%s\n", words[j]);
char *pptr = words[j];
int l;
words[j][strlen(words)-1]=',';
for (l = 0; l < 42; l++)
{
char *ptr = strchr(pptr, ',');
if (ptr)
{
*ptr = 0;
c[l][j] = atof(pptr);
pptr = ptr + 1;
}
}
}
int l;
for (j = 0; j < k; j++)
{
printf("\n");
for (l = 0; l < 42; l++)
{
printf("%.2lf\t", c[l][j]);
}
}
for (;i>=0;i--)
free(words[i]);
free(words);
return 0;
}
However, now the problem is the value after last comma does not included to array....