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  1. #include <stdio.h>
  2.  
  3. int main ( void )
  4. {
  5.     int i, arr[10]= {1,2,3,4,5,6,7,8,9,10};
  6.     int *start = &arr[0], *end = &arr[9];
  7.     for (i=0;i<10;++i)
  8.         printf("arr[%d] = %d\n", i, arr[i]);
  9.     do
  10.     {
  11.         i = *start;
  12.         *start = *end;
  13.         *end = i;
  14.     } while ( ++start < --end);
  15.     for (i=0;i<10;++i)
  16.         printf("arr[%d] = %d\n", i, arr[i]);
  17.     return 0;
  18. }
Success #stdin #stdout 0s 2248KB
comments (?)
stdin 
Standard input is empty
stdout 
arr[0] = 1
arr[1] = 2
arr[2] = 3
arr[3] = 4
arr[4] = 5
arr[5] = 6
arr[6] = 7
arr[7] = 8
arr[8] = 9
arr[9] = 10
arr[0] = 10
arr[1] = 9
arr[2] = 8
arr[3] = 7
arr[4] = 6
arr[5] = 5
arr[6] = 4
arr[7] = 3
arr[8] = 2
arr[9] = 1
https://ideone.com/CcCy6E
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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