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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <limits.h>
  4. typedef struct Node {
  5.     int data;
  6.     struct Node* next;
  7. } Node;
  8. typedef struct Stack {
  9.     Node* top;
  10. } Stack;
  11. void init_stack(Stack* s) {
  12.     s->top = NULL;
  13. }
  14. int is_empty(Stack* s) {
  15.     return s->top == NULL;
  16. }
  17. void push(Stack* s, int value) {
  18.     Node* new_node = (Node*)malloc(sizeof(Node));
  19.     new_node->data = value;
  20.     new_node->next = s->top;
  21.     s->top = new_node;
  22. }
  23. int pop(Stack* s) {
  24.     if (is_empty(s)) {
  25.         return INT_MIN;
  26.     }
  27.     Node* temp = s->top;
  28.     int value = temp->data;
  29.     s->top = temp->next;
  30.     free(temp);
  31.     return value;
  32. }
  33. void decimal_to_b(int number, int b) {
  34.     Stack s;
  35.     init_stack(&s);
  36.     if (b < 2 || b > 16) {
  37.         printf("Base invalide\n");
  38.         return;
  39.     }  
  40.     char hex[] = "0123456789ABCDEF";
  41.     while (number) {
  42.         push(&s,   number % b);
  43.         number /= b;
  44.     }
  45.     while (!is_empty(&s)) {
  46.         printf("%c\t", hex[pop(&s)]);
  47.     }
  48.     printf("\n");
  49. }
  50.  
  51. int main() {
  52.     int number;
  53.     printf("Entrez un entier décimal : ");
  54.     scanf("%d", &number);
  55.     int base;
  56.     printf("Entrez la base : ");
  57.     scanf("%d", &base);
  58.     decimal_to_b(number,base);
  59.     return 0;
  60. }
  61.  
Success #stdin #stdout 0.01s 5288KB
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Entrez un entier décimal : Entrez la base : Base invalide
https://ideone.com/4uefbX
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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