/* Works as intended */

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

int main(void) {

  char *str = "abc135def24681ghi3579";
  char alph[25], numb[25];
  int numres;

  while (sscanf(str,"%[abcdefghijklmnopqrstuvwxyz]", alph) == 1){
    str += strlen(alph);

    numres = sscanf(str,"%[0123456789]", numb);
    str += strlen(numb);

    if (numres != 1) 
       printf("MISMATCH");
    else
       printf("Alphabetic: %s\n"
              "Numeric: %s\n\n",
              alph, numb);
  }
  
  return 0;
}