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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. typedef struct {
  5.     int **pointers;
  6.     int *array;
  7.     int *sizes;
  8.     int stacks_number;
  9. } Stacks_array;
  10.  
  11. void init_array(Stacks_array *array) {
  12.     // Ввод числа стеков
  13.     int N;
  14.     printf("\nType number of stacks: ");
  15.     if ((scanf("%d", &N) == 0) || (N < 3)){
  16.         printf("\nError.\n ");
  17.         exit(-1);
  18.     }
  19.     array->stacks_number = N;
  20.  
  21.     // Ввод начальных размеров стеков.
  22.     array->pointers = malloc(sizeof(*array->pointers) * N);
  23.     // Храним размеры для каждого стека.
  24.     array->sizes = malloc(sizeof(*array->sizes) * N);
  25.  
  26.     int total_size = 0;
  27.     for (int i = 0; i < N; i++) {
  28.         int size;
  29.         printf("\nType size of stack number %d: ", i);
  30.         if ((scanf("%d", &size) == 0) || ( size < 2)) {
  31.             printf("\nError. Try again.\n ");
  32.             i--;
  33.             continue;
  34.         }
  35.  
  36.         array->sizes[i] = size;
  37.         total_size += size;
  38.     }
  39.     // Инициализация массива
  40.     array->array = malloc(sizeof(*array->array) * total_size);
  41.  
  42.     // Инициализируем указатели.
  43.     printf("Data area: %p\n", (void *)array->array);
  44.     int offset = 0;
  45.     for (int i = 0; i < N; i++) {
  46.         array->pointers[i] = array->array + offset;
  47.         printf("stack %i: %p\n", i, (void *)array->pointers[i]);
  48.         offset += array->sizes[i];
  49.     }
  50. }
  51.  
  52. int main(void) {
  53.     Stacks_array array;
  54.     init_array(&array);
  55.     return 0;
  56. }
  57.  
Success #stdin #stdout 0s 2304KB
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stdin
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stdout
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Type number of stacks: 
Type size of stack number 0: 
Type size of stack number 1: 
Type size of stack number 2: Data area: 0x841e028
stack 0: 0x841e028
stack 1: 0x841e038
stack 2: 0x841e04c
https://ideone.com/C6PObS
language:
C99 (gcc 8.3)
created:
7 years ago
visibility:
secret

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