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  1. #include <stdio.h>
  2. #include <string.h>
  3. #include <stdlib.h>
  4.  
  5. long double array[] =
  6. {
  7.     0.304411824158121,
  8.     0.702270983146229,
  9.     0.675987113307883,
  10.     0.652289676782947,
  11.     0.975411752562938,
  12.     0.284802741036713,
  13.     0.877898595240810,
  14.     0.726726914957288,
  15.     0.084725908720116,
  16.     0.946546040643011
  17. };
  18.  
  19.  
  20. void revarray(long double * arr, int size)
  21. {
  22.     for(int i = 0, j = size-1; i < j; ++i, --j)
  23.     {
  24.         long double tmp = arr[i];
  25.         arr[i] = arr[j];
  26.         arr[j] = tmp;
  27.     }
  28. }
  29.  
  30.  
  31. void rev_array(void * arr, int count, int size)
  32. {
  33.     unsigned char * x = (unsigned char *)arr;
  34.     for(int i = 0, j = count-1; i < j; ++i, --j)
  35.     {
  36.         unsigned char * from = x + i*size;
  37.         unsigned char * to   = x + j*size;
  38.         for(int k = 0; k < size; ++k)
  39.         {
  40.             unsigned char tmp = from[k];
  41.             from[k] = to[k];
  42.             to[k] = tmp;
  43.         }
  44.     }
  45. }
  46.  
  47.  
  48.  
  49. int main(int argc, char** argv)
  50. {
  51.     int i;
  52.  
  53.     for (i = 0; i < 10; i++)
  54.     {
  55.         printf("%.15Lf\n", array[i]);
  56.     }
  57.  
  58.     puts("");
  59.     puts("");
  60.  
  61.     rev_array(array, 10, sizeof(long double));
  62.  
  63.     for (i = 0; i < 10; i++)
  64.     {
  65.         printf("%.15Lf\n", array[i]);
  66.     }
  67.  
  68.     return 0;
  69. }
  70.  
Success #stdin #stdout 0s 2168KB
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stdin
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Standard input is empty
stdout
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0.304411824158121
0.702270983146229
0.675987113307883
0.652289676782947
0.975411752562938
0.284802741036713
0.877898595240810
0.726726914957288
0.084725908720116
0.946546040643011


0.946546040643011
0.084725908720116
0.726726914957288
0.877898595240810
0.284802741036713
0.975411752562938
0.652289676782947
0.675987113307883
0.702270983146229
0.304411824158121
https://ideone.com/La56eX
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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