strtok_const_string.c

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


int main (void)
{
    char *string = "T01:91+:123";
    char tmp[16];
    char* s;

    /* Strtok can not do with const char*, so I use strncpy copy it to an char array */
    strncpy(tmp, string, sizeof(string));

    s = strtok (tmp, "T");
    printf("string: %s\n", string); // 01:91+:123
    s = strtok (s, ":");

    printf("city id: %s\n", s); // 01
    return 0;
}