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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a=1,count=0;
  5.  
  6. 	while(a<=100000){
  7. 		a=2*a+1;
  8.  
  9. 		if((a>=100)&&(a<=10000)){
  10. 	count++;}
  11. 	}
  12. 	printf("100以上から10000以下となるのは%d個ある",count);
  13. 	return 0;
  14. }
  15.  
Success #stdin #stdout 0.01s 5292KB
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Standard input is empty
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100以上から10000以下となるのは7個ある
https://ideone.com/zNLHAM
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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