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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a,b,c,i,j;
  5. 	int kosuu=0;
  6. 	scanf("%d %d",&a,&b);
  7.  
  8. 	for(i=a;i<=b;i++){
  9. 		c=1;
  10. 		for(j=2;j<i;j++){
  11. 			if(i%j==0){
  12. 				c=0;
  13. 				break;
  14. 			}		
  15. 		}if(c==1){
  16. 			kosuu++;
  17. 		}
  18.  
  19. 	}
  20. 	printf("%d個",kosuu);
  21. 	return 0;
  22. }
  23.  
Success #stdin #stdout 0s 5332KB
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4個
https://ideone.com/L0qr6d
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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