cv7

cv7/program.c

@@ -0,0 +1,41 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#define SIZE 100
+
+struct tree {
+    char* value;
+    struct tree* left;
+    struct tree* right;
+};
+
+struct tree* read_tree(){  
+    char buffer[SIZE];  
+    memset(buffer, 0, SIZE);  
+    char* r = fgets(buffer, SIZE, stdin);  
+    if(buffer[0] == '\n'){
+        return NULL;    
+    }
+    assert(r); 
+    struct tree* node = calloc(1, sizeof(struct tree)); 
+    node->value = malloc(strlen(buffer) + 1);
+    assert(node->value); 
+    node->left = read_tree();
+    node->right = read_tree();
+    return node;  
+} 
+
+void destroy_tree(struct tree* node) {
+    if (node == NULL) return;
+    destroy_tree(node->left);
+    destroy_tree(node->right);
+    free(node);
+}
+
+int main(){
+    struct tree* root = read_tree();
+    read_tree(); 
+    destroy_tree(root);
+    return 0;
+}