If you want search
to be a separate executable, you will need to:
- Modify
search.c
to include amain
function that parses command-line arguments. - Have a mechanism to build and access the tree from
search.c
. - Compile
search.c
separately to create its own executable.
However, there is a challenge here: the tree constructed in trees.c
exists only in the memory space of the trees
executable while it's running and cannot be accessed by a separate search
executable after trees
has terminated.
To overcome this, you can serialize the tree to a file in trees.c
and then read this file and reconstruct the tree in search.c
.
After constructing the tree, you can write it to a file in a pre-order, in-order, or any other traversal method that can be used to reconstruct the tree.
Read the file and reconstruct the tree in memory before performing the search operation.
Implement a main
function in search.c
to parse the command-line arguments and call the search
function with the reconstructed tree and the input number.
Compile search.c
separately to create its own executable.
void serialize_tree(node *root, FILE *file) {
if (root == NULL) {
fprintf(file, "# ");
return;
}
fprintf(file, "%d ", root->number);
serialize_tree(root->left, file);
serialize_tree(root->right, file);
}
// In main function of trees.c, after constructing the tree
FILE *file = fopen("tree.txt", "w");
if (file == NULL) {
return 1; // Handle error
}
serialize_tree(tree, file);
fclose(file);
node *deserialize_tree(FILE *file) {
char buffer[10];
if (fscanf(file, "%s", buffer) != 1) {
return NULL; // Handle error
}
if (buffer[0] == '#') {
return NULL;
}
node *root = malloc(sizeof(node));
if (root == NULL) {
return NULL; // Handle error
}
root->number = atoi(buffer);
root->left = deserialize_tree(file);
root->right = deserialize_tree(file);
return root;
}
// In main function of search.c, before calling search
FILE *file = fopen("tree.txt", "r");
if (file == NULL) {
return 1; // Handle error
}
node *tree = deserialize_tree(file);
fclose(file);
int main(int argc, char *argv[]) {
if (argc != 2) {
fprintf(stderr, "Usage: %s number\n", argv[0]);
return 1;
}
int number = atoi(argv[1]);
if (search(tree, number)) {
printf("%d found in the tree.\n", number);
} else {
printf("%d not found in the tree.\n", number);
}
return 0;
}
gcc search.c -o search
In this approach, you need to run the trees
executable first to construct the tree and serialize it to a file, and then run the search
executable to search a number in the serialized tree.