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  1. #include <stdio.h> 
  2.  
  3. int main(void) {
  4. 	int a, r, n;
  5. 	int s, ai, i;
  6.  
  7. 	scanf("%d%d%d", &a, &r, &n);
  8.  
  9. 	ai = a;	// i = 1, the first term
  10. 	s = a;
  11.  
  12. 	printf("%d ", a);
  13. 	for (i = 2;i<=n;i++) {
  14. 		ai = ai*r;
  15. 		s += ai;
  16. 		printf("+ %d ",ai);
  17. 	}
  18.  
  19. 	printf("= %d\n", s);
  20.  
  21. 	return 0;
  22. }
Success #stdin #stdout 0s 5324KB
comments (?)
stdin
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2 3 4
stdout
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2 + 6 + 18 + 54 = 80
https://ideone.com/NN2eki
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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