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

main()
{
  char line[100];
  char *ptr;

  while (gets(line) != NULL) {
    ptr = strchr(line, ' ');
    if (ptr == NULL) {
      printf("No spaces\n");
    } else {
      while (ptr != NULL) {
        printf("Space at character %d\n", ptr-line);
        ptr = strchr(ptr+1, ' ');
      }
    }
  }
}