How do I write a function to split and return an array for a string with delimiters in the C programming language?
char* str = \"JAN,FEB,MAR,APR,MAY,JUN,JUL,
Below is my strtok()
implementation from zString library.
zstring_strtok()
differs from standard library's strtok()
in the way it treats consecutive delimiters.
Just have a look at the code below,sure that you will get an idea about how it works (I tried to use as many comments as I could)
char *zstring_strtok(char *str, const char *delim) {
static char *static_str=0; /* var to store last address */
int index=0, strlength=0; /* integers for indexes */
int found = 0; /* check if delim is found */
/* delimiter cannot be NULL
* if no more char left, return NULL as well
*/
if (delim==0 || (str == 0 && static_str == 0))
return 0;
if (str == 0)
str = static_str;
/* get length of string */
while(str[strlength])
strlength++;
/* find the first occurance of delim */
for (index=0;index
Below is an example usage...
Example Usage
char str[] = "A,B,,,C";
printf("1 %s\n",zstring_strtok(s,","));
printf("2 %s\n",zstring_strtok(NULL,","));
printf("3 %s\n",zstring_strtok(NULL,","));
printf("4 %s\n",zstring_strtok(NULL,","));
printf("5 %s\n",zstring_strtok(NULL,","));
printf("6 %s\n",zstring_strtok(NULL,","));
Example Output
1 A
2 B
3 ,
4 ,
5 C
6 (null)
The library can be downloaded from Github https://github.com/fnoyanisi/zString