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Recursion in C++

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Write a program use C++ language with Recursion algorithm to do this exercise. Prefer compile with Visual C++ or DevC Snowflake.h and image included in attachment file.

19. What changes have to made in the program in snowflake.h to draw a line as in file fig521.jpg? Try it and experiment with other possibilities to generate other curves.

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Solution Summary

A recursive program in C++ is enhanced to draw snow flake.

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Changes in SZ.ZIP.

1. vonKoch() function is modified to accept starting position point:
vonKoch::vonKoch(int s, int lvl, CDC *pDC, CPoint &pt) ;

2. "else" branch in drawFourLines() changed as follows:
drawFourLines(side/3,level-1);
left (90);
drawFourLines(side/3,level-1);
right(90);
drawFourLines(side/3,level-1);
...

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