12 lines
		
	
	
	
		
			115 B
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			12 lines
		
	
	
	
		
			115 B
		
	
	
	
		
			C
		
	
	
	
	
	
#include <assert.h>
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extern int busy; 
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C_close()
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{
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	assert( busy);
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	end_back();
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        do_close();
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	busy = 0;
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}
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