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you can use strtok(char*, deliminator)

or

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

char** str_split(char* a_str, const char a_delim)
{
char** result = 0;
size_t count = 0;
char* tmp = a_str;
char* last_comma = 0;

/* Count how many elements will be extracted. */
while (*tmp)
{
if (a_delim == *tmp)
{
count++;
last_comma = tmp;
}
tmp++;
}

/* Add space for trailing token. */
count += last_comma < (a_str + strlen(a_str) - 1);

/* Add space for terminating null string so caller
knows where the list of returned strings ends. */
count++;

result = malloc(sizeof(char*) * count);

if (result)
{
size_t idx = 0;
char* token = strtok(a_str, ",");

while (token)
{
assert(idx < count);
*(result + idx++) = strdup(token);
token = strtok(0, ",");
}
assert(idx == count - 1);
*(result + idx) = 0;
}

return result;
}

int main()
{
char months[] = "JAN,FEB,MAR,APR,MAY,JUN,JUL,AUG,SEP,OCT,NOV,DEC";
char** tokens;

printf("months=[%s]\n\n", months);

tokens = str_split(months, ',');

if (tokens)
{
int i;
for (i = 0; *(tokens + i); i++)
{
printf("month=[%s]\n", *(tokens + i));
free(*(tokens + i));
}
printf("\n");
free(tokens);
}

return 0;
}

read more from source here:
http://www.cplusplus.com/reference/cstring/strtok/
http://stackoverflow.com/questions/9210528/split-string-with-delimiters-in-c

參考資料 comp sci veteran

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