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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. typedef struct node{
  5.     int data;
  6.     struct node *ptr;
  7. } node;
  8.  
  9. node* insert(node* head, int num) {
  10.     node *temp, *prev, *next;
  11.     temp = (node*)malloc(sizeof(node));
  12.     temp->data = num;
  13.     temp->ptr = NULL;
  14.     if(!head){
  15.         head=temp;
  16.     } else{
  17.         prev = NULL;
  18.         next = head;
  19.         while(next && next->data<=num){
  20.             prev = next;
  21.             next = next->ptr;
  22.         }
  23.         if(!next){
  24.             prev->ptr = temp;
  25.         } else{
  26.             if(prev) {
  27.                 temp->ptr = prev->ptr;
  28.                 prev-> ptr = temp;
  29.             } else {
  30.                 temp->ptr = head;
  31.                 head = temp;
  32.             }            
  33.         }   
  34.     }
  35.     return head;
  36. }
  37.  
  38. void free_list(node *head) {
  39.     node *prev = head;
  40.     node *cur = head;
  41.     while(cur) {
  42.         prev = cur;
  43.         cur = prev->ptr;
  44.         free(prev);
  45.     }       
  46. }
  47.  
  48. int main(){
  49.     int num;
  50.     node *head, *p;
  51.     head = NULL;
  52.     do {
  53.         printf("Enter a number");
  54.         scanf("%d",&num);
  55.         if(num) {
  56.             head = insert(head, num);
  57.         }
  58.     } while(num);
  59.     p = head;
  60.     printf("\nThe numbers are:\n");
  61.     while(p) {
  62.         printf("%d ", p->data);
  63.         p = p->ptr;
  64.     }
  65.     free_list(head);
  66.     return 0;
  67. }
Success #stdin #stdout 0s 1968KB
comments (?)
stdin 
2
1
4
9
-1
8
5
3
1
0
stdout 
Enter a numberEnter a numberEnter a numberEnter a numberEnter a numberEnter a numberEnter a numberEnter a numberEnter a numberEnter a number
The numbers are:
-1 1 1 2 3 4 5 8 9
https://ideone.com/wT5iQ8
language:
C (gcc 8.3)
created:
11 years ago
visibility:
secret

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