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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a,b,i,j,count=0,sum=0;
  5. 	scanf("%d %d",&a,&b);
  6. 	for(i=a;i<=b;i++){
  7. 		for(j=1;j<=i;j++){
  8. 		if(j%i==0)
  9. 		count++;
  10. 		}
  11. 		if(count==2){
  12. 			sum=sum+1;
  13. 			count=0;
  14. 		}
  15. 		}
  16. 		printf("%d",sum);
  17. 	return 0;
  18. }
  19.  
Success #stdin #stdout 0s 5312KB
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https://ideone.com/5EPZ8u
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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