read file example

readfile.c

#include <stdio.h>
#include <string.h>

int main(void) {
    puts("Reading File");

   FILE *fp; // file pointer to data file
   fp = fopen ("data.txt", "r"); 

   FILE *stream;
   char *line = NULL;
   size_t len = 0;
   ssize_t read;

   fp = fopen("data.txt", "r");

   while ((read = getline(&line, &len, fp)) != -1) {
       printf("%s", line);

       /// getline allocates memory for you using 'realloc' internally
         // notice i can pass it a NULL char *
         //
       // now parse the comma delimated line w/ strtok
        char *token = strtok (line,",");
        char * dest = NULL;
        while (token != NULL) {
            printf("Parsed %s\n", token);
            token = strtok (NULL, ",");
        }
   }

   fclose(fp);
   
   return 0;
}