Linked List 1

#include <stdio.h>

typedef struct node {
    int val;
    struct node * next;
} node_t;
void print(node_t * head) {
    node_t * current = head;

    while (current != NULL) {
        printf("%d\n", current->val);
        current = current->next;
    }
}
void menu(node_t *head) {
    int n;
    printf("What operation do you want to execute?\n");
    printf("Press 1 to print all elements.\n");
    printf("Press 0 to exit.\n");
    scanf("%d", &n);
    switch(n) {
        case 1:
            print(head);
            break;
    }
    if (n!=0) menu(head);
}
int main() {
    node_t *head = NULL;
    head = malloc(sizeof(node_t));
    int num;
    printf("Enter the first integer: ");
    scanf("%d", &num);
    head->val = num; // head er address e jei node ta ache tar val er man rakhlam num
    head->next = NULL; // porer address hishebe rakhlam NULL. orthat ekhanei shes

    menu(head);
    return 0;
}