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  1. #include <iostream>
  2. using namespace std;
  3. int main()
  4. {
  5. int a,b,x,c;
  6. bool z ;
  7. cin>>a>>b;
  8. for(a;a<=b;a++)
  9. {c=a;
  10. 	while (c>0)
  11. 	{
  12. 		z=true;
  13.  
  14. 	x=a%10;
  15. 	if ((x!=4)&&(x!=7))
  16. 	{
  17. 		z=false;
  18. 		break;
  19. 	}
  20. 	c=c/10;
  21.  
  22. }
  23. if (z==true)
  24. {
  25. 	cout <<a<<" ";
  26. }
  27. }
  28. return 0;
  29. }
Success #stdin #stdout 0.01s 5404KB
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https://ideone.com/CefYPl
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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