In this program, we are going to share how to reverse a linked list using c programming language. If you are a beginner and want to start learning the c programming, then keep your close attention in this tutorial as I am going to share a c program to reverse a linked list.
Copy the below C program and execute it with the help of C compiler. At the end of this program, We have shared the output of this program.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | #include <stdio.h> #include <stdlib.h> #define MAX 100 struct leftnode { int num; struct leftnode *next; }; void linklist_add(struct leftnode **n, int val); void linklist_reverse(struct leftnode **n); void linklist_display(struct leftnode *n); int main(void) { struct leftnode *new = NULL; int i = 0; for(i = 0; i <= MAX; i++) linklist_add(&new, i); printf("Linked list before reversal:n"); linklist_display(new); linklist_reverse(&new); printf("Linked list after reversal:n"); linklist_display(new); return 0; } void linklist_add(struct leftnode **n, int val) { struct leftnode *temp = NULL; temp = malloc(sizeof(struct leftnode)); temp->num = val; temp->next = *n; *n = temp; } void linklist_reverse(struct leftnode **n) { struct leftnode *a = NULL; struct leftnode *b = NULL; struct leftnode *c = NULL; a = *n, b = NULL; while(a != NULL) { c = b, b = a, a = a->next; b->next = c; } *n = b; } void linklist_display(struct leftnode *n) { while(n != NULL) printf(" %d", n->num), n = n->next; printf("n"); } |
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