Question

How to iterate over a linked list in C

Answer 1

#include <stdio.h>
#include <stdlib.h>

typedef struct Node {
    int x;
    struct Node *next;
} Node;

int main(void) {
    Node root;
    
    root.x = 12;
    root.next = malloc(sizeof(Node));
    root.next->x = 189;
    root.next->next = malloc(sizeof(Node));
    root.next->next->x = 1983;
    root.next->next->next =  malloc(sizeof(Node));
    root.next->next->next->x = 10000;
    root.next->next->next->next = NULL;
    
    for (Node *current = &root; current != NULL; current = current->next) {
        printf("%d\n", current->x);
    }
    
    free(root.next->next->next);
    free(root.next->next);
    free(root.next);
    
    return 0;
}



/*
run:

12
189
1983
10000

*/

 

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