Reading a csv file using C and then doing string manipulation -

first open csv file (cars.csv) using c file cars.c. csv file like:

toyota, 100, 20, 150.50   nissan, 200, 50, 100.75   bmw,    400, 80, 323.00 

the 1st column names, 2nd column stock, 3rd column order, 4th column price.

then have 2 works(i call program in commandline work name , other argument need pass):

1. list items in csv file while commas cannot part of output. have print headers each column. (./cars list)

2. i send argument when running program command line. argument 1 name of items in csv file. have subtract 1 stock , update csvfile. (./cars reduce nissan)

this how opened csv file.

void main(int argc, char *argv[]) {  file *in = fopen ("cars.csv" ,"rt");  if (in == null) {    fclose (in); return 0;  } 

//i need store data csv file in array of pointers. know how that, im having problem in storing them without commas , doing need in part 1.

//this code write 2nd part.

int p =0; for(p =0; p<; p = p + 4) {   if(strcmp(argsv[2],save[p]) == 0) {  //save array of pointers     int r = int(save[p +1]);           //store data csv file    int s = r - 1;    char str[15];    sprintf(str, "%d", s);    save[p +1] = str; // not sure if line makes sense } } 

there couple of possible solutions.

here's one:

1. read lines array of pointers. allocate array malloc , reallocate needed realloc. read lines fgets.

2. for each line, use strtok split line, , whatever need each field.

another solution:

use favorite search engine search existing csv-reading library (there many out there, can handle advanced csv files).