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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a=100,b,c,d,e,x;
  5. 	int count=0;
  6.  
  7.  
  8. 		do
  9. 		{
  10. 			b=a/100;
  11. 		    c=a/10;
  12. 		    d=c%10;
  13. 		    e=a%10;
  14. 		    x=b+d+e;
  15.  
  16. 			if(x%7==0){
  17. 				count++;
  18. 			}
  19. 			a=a+1;
  20. 		}
  21. 		while((100<=a) && (a<=999));
  22.  
  23. 	printf("%d個 \n",count);
  24. 	return 0;
  25. }
  26.  
Success #stdin #stdout 0s 5308KB
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https://ideone.com/h9frh4
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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