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  1. #include <stdio.h>
  2.  
  3. typedef struct
  4. {
  5.     int column;
  6.     int row;
  7. } STK;
  8.  
  9. STK stk[1024];
  10. int top = 0;
  11. int size = 3;
  12.  
  13. void putTo( int i, int j ){}
  14. int checkIfPosIsOK( int i, int j ){ return 1; }
  15. void removeFrom( int i, int j ){}
  16.  
  17. static STK pop()
  18. {
  19.     return stk[--top];
  20. }
  21.  
  22. static void push( STK v )
  23. {
  24.     stk[top++] = v;
  25. }
  26.  
  27. static int empty()
  28. {
  29.     return ( top == 0 );
  30. }
  31.  
  32. void ff( int column )
  33. {
  34.     int row;
  35.     STK tmp;
  36.  
  37.     for( ;; )
  38.     {
  39. L1:
  40.         for( row = 1; row <= size; ++row )
  41.         {
  42.             if( checkIfPosIsOK( row, column ) )
  43.             {
  44.                 putTo( row, column );
  45.  
  46.                 if( column < size )
  47.                 {
  48.                     printf( "if: %d\n", column );
  49.  
  50.                     tmp.column = column;
  51.                     tmp.row = row;
  52.                     push( tmp );
  53.  
  54.                     column = column + 1;
  55.  
  56.                     goto L1;
  57. L2:
  58.                     printf( "if: %d\n", column );
  59.                 }
  60.                 else
  61.                 {
  62.                     printf( "else: %d\n", column );
  63.                 }
  64.  
  65.                 removeFrom( row, column );
  66.             }
  67.         }
  68.  
  69.         if( !empty() )
  70.         {
  71.             tmp = pop();
  72.             column = tmp.column;
  73.             row = tmp.row;
  74.  
  75.             goto L2;
  76.         }
  77.         else
  78.             break;
  79.     }
  80. }
  81.  
  82. int main()
  83. {
  84.     ff( 4 );
  85.  
  86.     return 0;
  87. }
  88.  
Success #stdin #stdout 0s 1840KB
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stdin
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Standard input is empty
stdout
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else: 4
else: 4
else: 4
https://ideone.com/MSSZQ6
language:
C (gcc 8.3)
created:
13 years ago
visibility:
public

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