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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int n,a=0;
  5. 	printf("整数を入力してください。:"); scanf("%d",&n);
  6. 	if(n==0){
  7. 		a=1;
  8. 	}else{
  9. 	  while(n!=0){
  10. 		n/=10;
  11. 		a++;
  12. 	      }
  13. 	}
  14. 	printf("桁数=%d\no",a);
  15. 	return 0;
  16. }
  17.  
Success #stdin #stdout 0s 5316KB
comments (?)
stdin 
1000
stdout 
整数を入力してください。:桁数=4
o
https://ideone.com/RvBEH1
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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