Lab 3 - IDA

Lab 3 (B): Program arguments
• STEP 1: Break the string in to parts
– Use strtok_r() in lib/string.[ch]:
– Example exec(“insult ­s 17 ”);
char s[] = "insult ­s 17 "; const char delim[] = ” ”;
char *token, *save_ptr;
for (token = strtok_r (s, delim, &save_ptr);
token != NULL;
token = strtok_r (NULL, delim, &save_ptr))
Output:
printf ("'%s' ", token);
'insult' '­s' '17'
Warning: the string s is modified
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