#include <stdio.h>
#include <string.h>
#define K 4
#define W 4
 
void swap( int (**m)[K], const int w1, const int w2)  {
 
  int (*temp)[K] = m[w1];
  m[w1] = m[w2];
  m[w2] = temp;
 
}
 
int main( void )  {
 
  int ( *m )[K] = { {3,5,1,4}, {0,0,0,0}, {9,9,1,9}, {0,0,0,0} };
 
  swap( &m, 0, 2);  //zamień wiersz 0 z 2
 
  for( int i = 0; i < W; ++i )  {
 
    for( int j = 0; j < K; ++j )   printf("%3d ", m[i][j]);
    puts("");
 
  }
 
  return 0;
 
}

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