Q: Creating a tree with Breadth-First Search I'm trying to generate a tree from string in which this tree is "coded" in Breadth-First Search way. My structures:
/* declaration for queue structure */
typedef struct node node;

/* queue structure for algorithms */
typedef struct queue {
  node *item;
  struct queue *nextItem;
} queue;

/* tree node */
typedef struct node {
  int value;
  int numOfChildren;    // to avoid the necessity of creating "dummy nodes" at the end of children array
  struct node **children;
} node;

Examples:
For input "20." there should be a tree:
20

For input "20. 10 30 40 50." there should be a tree:
    20
10 30 40 50

And for input "20. 10 30 40 50. . 31 32. . 51 52." there should be a tree:
        20
10   30   40   50
   31 32      51 52

So the tree is "coded" with numbers, spaces and dots. And I have a problem with trees generating. Here's my UNFINISHED initTree(char *) function:
void initTree(char *strTree) {
  queue *queueStart = NULL;
  queue *queueEnd = NULL;  // to speed up adding items to queue...
  queue *queuePointer = NULL;
  int numOfChildren = 0;
  while(*strTree != '\0') {
    if(*strTree == '.') {
      if(queueStart == queueEnd) {  // first dot
        if(ROOT == NULL)
          ROOT = queueStart->item;
      } else if(*(strTree-1) == ' ' && numOfChildren == 1) {
        queueStart = queueStart->nextItem;
      } else {  // queueStart != queueEnd && numOfChildren > 0
        queueStart->item->children = childrenConstructor(numOfChildren);
        queueStart->item->numOfChildren = numOfChildren;
        if(queueStart == queuePointer)
          queuePointer = queueStart->nextItem;
        int i;
        for(i=0; i<numOfChildren; ++i) {
          queueStart->item->children[i] = nodeConstructor(queuePointer->item->value);
          queuePointer = queuePointer->nextItem;
        }
        // REMEMBER TO DELETE QUEUE ITEM
        // queue *tmp = queueStart;
        queueStart = queueStart->nextItem;
      }
      numOfChildren = 0;
    } else if(*strTree == ' ') {
      ++numOfChildren;
    } else {  // *strTree >= '0' && *strTree <= '9'
      if(queueStart == NULL) {
        queueStart = queueEnd = strToInt(&strTree);
        queuePointer = queueStart;
      } else {
        queueEnd->nextItem = strToInt(&strTree);
        queueEnd = queueEnd->nextItem;
      }
      if(numOfChildren == 1)
        queuePointer = queueEnd;
    }
    ++strTree;
  }
  // REMEMBER TO DELETE A QUEUE
}

So, what's the matter?
Well, when I'm trying to print that tree in simple way (only for testing purposes), with input "20. 10 30 40 50. . 31 32. . 51 52.", the second "level" of the tree is not "visible". As if children haven't been added to the tree.
Here's my print function:
void simpleRecursiveTreePrint(node *n) {
  if(n == NULL)
    return;
  printf("value %d (num of children: %d)\n", n->value, n->numOfChildren);
  int i;
  for(i=0; i<n->numOfChildren; ++i)
    simpleRecursiveTreePrint(n->children[i]);
  return;
}

And output (for mentioned input):
value 20 (num of children: 4)
value 10 (num of children: 0)
value 30 (num of children: 0)
value 40 (num of children: 0)
value 50 (num of children: 0)

So, well, it looks like the nodes were lost... But in vscode, when I'm debbuging, nodes 31, 32, 51 and 52 are processed in function initTree(char *). Hm, maybe there's a problem with pointers assignment? Or in allocating a memory? I really don't know... And I got headache from this coding :D
Anyone?
