Trying

du6/program.c

@@ -0,0 +1,132 @@
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#define SIZE 100
+
+
+struct tree{
+    char value[SIZE];
+    struct tree* left;
+    struct tree* right;
+};
+
+
+void destroy_tree(struct tree* tree){
+    if(tree->left){
+        destroy_tree(tree->left);
+    }
+    if(tree->right){
+        destroy_tree(tree->right);
+    }
+    free(tree);
+}
+
+struct tree* read_tree(){
+    char buffer[SIZE];
+    memset(buffer,0,SIZE);
+    char* r = fgets(buffer,SIZE,stdin);
+    r[strcspn(r, "\n")] = '\0';
+    assert(r);
+    struct tree* node = calloc(1,sizeof(struct tree));
+    memcpy(node->value,buffer,SIZE);
+    if(buffer[0] == '*'){
+        node->left = NULL;
+        node->right = NULL;
+        return node;
+
+    }
+    node->left = read_tree();
+    node->right = read_tree();
+    // Ak je nacitany riadok listovy uzol ,tak netreba robit nic
+    // inak rekurzivne nacitanie laveho syna
+    // a rekurzivne nacitanie praveho syna
+    return node;
+}
+void print_tree(struct tree* tree,int offset){
+    for (int i = 0; i < offset; i++){
+        printf(" ");
+    }
+    printf("%s",tree->value);
+    if (tree->left){
+        print_tree(tree->left,offset +3);
+        print_tree(tree->right,offset +3);
+    }
+}
+int count_leaves(struct tree* tree){
+    int count = 0;
+    if(tree == NULL){
+        return count;
+    }
+    if(tree->left == NULL && tree->right == NULL && tree){
+        return count +1;
+    }
+    else{
+        return count + count_leaves(tree->left) + count_leaves(tree->right);
+
+    }
+}
+
+int main(void){
+    bool whitespace = false;
+
+    struct tree* tree = read_tree();
+    char line[SIZE];
+    
+    if(!tree){
+        printf("Bazu sa nedalo nacitat'.\n");
+        return 1;
+    }
+    while( fgets(line, sizeof(line), stdin)){
+         line[strcspn(line, "\n")] = '\0';
+         if(line[0] == '\0'){
+            whitespace = true;
+            break;
+         }
+
+    }
+    if(!whitespace){
+        printf("No whitespace after database\n");
+        return 1;
+    }
+    int numOfLeaves = count_leaves(tree);
+    char answer[SIZE];
+    printf("Expert z bufetu to vie\n");
+    printf("Pozna %d druhov ovocia a zeleniny.\n", numOfLeaves);
+    printf("Odpovedajte 'a' pre prvu moznost alebo 'n' pre druhu moznost.");
+    while(tree){
+    printf("\n%s", tree->value);
+    fgets(answer, sizeof(answer), stdin);
+    answer[strcspn(answer, "\n")] = '\0';
+    
+    if(strcmp(answer, "n") == 0){
+        tree = tree->left;
+        if(tree->value[0] == '*'){
+             printf("\n%s\n", tree->value);
+            printf("Koniec\n");
+            return 0;
+        }
+        printf("%s\n", tree->value);
+         fgets(answer, sizeof(answer), stdin);
+
+    }
+    else if(strcmp(answer, "a") == 0){
+        tree = tree->right;
+        if(tree->value[0] == '*'){
+            printf("\n%s\n", tree->value);
+            printf("Koniec\n");
+            
+            return 0;
+        }
+         fgets(answer, sizeof(answer), stdin);
+
+    }
+    else{
+        printf("%s\n", answer);
+        return 1;
+    }
+    }
+    destroy_tree(tree);
+return 0;
+}