c read csv

1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4
5const char* getfield(char* line, int num)
6{
7    const char* tok;
8    for (tok = strtok(line, ";");
9            tok && *tok;
10            tok = strtok(NULL, ";\n"))
11    {
12        if (!--num)
13            return tok;
14    }
15    return NULL;
16}
17
18int main()
19{
20    FILE* stream = fopen("input", "r");
21
22    char line[1024];
23    while (fgets(line, 1024, stream))
24    {
25        char* tmp = strdup(line);
26        printf("Field 3 would be %s\n", getfield(tmp, 3));
27        // NOTE strtok clobbers tmp
28        free(tmp);
29    }
30}
31