#include "stdio.h"

int main()
{
  int i = 0, j = 0;
  char data[256] = "1@2@3@4@5";
  char question[256][256];
  for (i = 0; i < 256; ++i) {
    question[i][0] = '\0';
  }

  i=-1;
  int lastj=0;
  while (1) {
    ++i;
    for (j ; data[j] != '@' && data[j] != '\0' ; j++) {
      question[i][j-lastj] = data[j];
    }
    question[i][j-lastj] = '\0';
    if (data[j] == '\0') {
      break;
    }
    j++;
    lastj=j;
  }

  for (i=0; i<256; ++i) {
    printf ("%s\n", question[i]);
  }
}