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  1. #include <stdio.h>
  2.  
  3. int main(void)
  4. {
  5. 	int num;
  6.  
  7. 	printf("整数を入力せよ：\n");
  8. 	scanf("%d",&num);
  9.  
  10. 	if (num < 0)
  11. 		num = -num;
  12.  
  13. 	int cou = 0;
  14.  
  15. 	if (num == 0) {
  16. 		cou = 1;
  17. 	} else {
  18. 		while (num > 0) {
  19. 			num = num / 10;
  20. 			cou = cou + 1;
  21. 		}
  22. 	}
  23.  
  24. 	printf("この整数の桁数は%dです。", cou);
  25.  
  26. 	return 0;
  27. }
Success #stdin #stdout 0s 5284KB
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984085t0
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整数を入力せよ：
この整数の桁数は6です。
https://ideone.com/BTL0R3
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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