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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. typedef struct Node {
  5.     int value;
  6.     struct Node *next;
  7. } Node;
  8.  
  9. int main(void)
  10. {
  11.     Node *head = malloc(sizeof(Node));
  12.     Node *second = malloc(sizeof(Node));
  13.     Node *third = malloc(sizeof(Node));
  14.  
  15.     head->value = 10;
  16.     head->next = second;
  17.  
  18.     second->value = 20;
  19.     second->next = third;
  20.  
  21.     third->value = 30;
  22.     third->next = NULL;
  23.  
  24.  
  25.     // Создаём новый узел
  26.     Node *new_node = malloc(sizeof(Node));
  27.     new_node->value = 25;
  28.     // Вставляем его между second и third
  29.     new_node->next = second->next;
  30.     second->next = new_node;
  31.  
  32.  
  33.     // Проходим по списку
  34.     Node *current = head;
  35.  
  36.     while (current != NULL) {
  37.         printf("%d\n", current->value);
  38.         current = current->next;
  39.     }
  40.  
  41.     // Освобождаем память
  42.     free(third);
  43.     free(second);
  44.     free(head);
  45.  
  46.     return 0;
  47. }
  48.  
  49.  
  50.  
Success #stdin #stdout 0s 5316KB
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10
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25
30
https://ideone.com/fqg2LC
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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