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  1. #include <stdio.h>
  2.  
  3. #define SIZE_BUFFER     128
  4.  
  5. int main(void)
  6. {
  7.     int buffer[SIZE_BUFFER];
  8.     size_t count = 0;
  9.     size_t sz_ar = sizeof(buffer) / sizeof(*buffer);
  10.  
  11.     while(count < sz_ar && scanf("%d", &buffer[count]) == 1)
  12.         count++;
  13.  
  14.     int size;
  15.     int var_tmp;
  16.  
  17.     if (count % 2 == 0) {
  18.         size = count / 2;
  19.  
  20.         for (int i = 0; i < size; i++) {
  21.             var_tmp = buffer[i];
  22.             buffer[i] = buffer[i + size];
  23.             buffer[i + size] = var_tmp;
  24.         }
  25.     } else if (count % 2 == 1) {
  26.         size = count / 2 + 1;
  27.  
  28.         for (int i = 0; i < size - 1; i++) {
  29.             var_tmp = buffer[i];
  30.             buffer[i] = buffer[i + size];
  31.             buffer[i + size] = var_tmp;
  32.         }
  33.     }
  34.  
  35.     for (int j = 0; j < count; j++) {
  36.         printf("%d ", buffer[j]);
  37.     }
  38.  
  39.     return 0;
  40. }
Success #stdin #stdout 0s 5300KB
comments (?)
stdin
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6 70 8 9 10 1 20 3 4 5 11
stdout
copy 
20 3 4 5 11 1 6 70 8 9 10
https://ideone.com/xi4DyY
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language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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