School Commit Init

Anul 1/Semestrul 2/OS/Labs/c-test-practice/hello-remember.c

@@ -0,0 +1,66 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+struct node {
+    char* name;
+    struct node* next;
+};
+
+struct node* add(struct node* head, char* name) {
+    struct node* n;
+    struct node* p;
+
+    n = (struct node*)malloc(sizeof(struct node));
+    n->name = (char*)malloc(strlen(name)+1);
+    strcpy(n->name, name);
+    n->next = NULL;
+
+    if(head == NULL) {
+        return n;
+    } 
+
+    p = head;
+    while(p->next != NULL) {
+        p = p->next;
+    }
+    p->next = n;
+    return head;
+}
+
+int known(struct node* head, char *name) {
+    struct node* p;
+
+    p = head;
+    while(p != NULL && strcmp(p->name, name) != 0) {
+        p = p->next;
+    }
+    return p != NULL;
+}
+
+void clear(struct node* head) {
+    if(head == NULL) {
+        return;
+    }
+    clear(head->next);
+    free(head->name);
+    free(head);
+}
+
+int main(int argc, char** argv) {
+    char name[64];
+    struct node* head=NULL;
+
+    while(scanf("%s", name) == 1) {
+        if(known(head, name)) {
+            printf("Still around %s, eh?\n", name);
+        }
+        else {
+            head = add(head, name);
+            printf("Hello %s\n", name);
+        }
+    }
+    clear(head);
+    return 0;
+}