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  1. //２第４回提出
  2. #include <stdio.h>
  3. int soso(int n){
  4. 	int k;
  5. 	int l=n;
  6. 	for(k=2; k<=n; k++){
  7. 		if(l%k==0){
  8. 			printf("%d",k);
  9. 			if(l==k){
  10. 				return 0;
  11. 			}
  12. 			else{
  13. 				printf("×");
  14. 				l=l/k;
  15. 				k=2;	
  16. 			}
  17.  
  18. 		}
  19. 	}
  20. }
  21.  
  22. int main(void) {
  23. 	int x;
  24. 	do{
  25. 		printf("3以上の整数を入力してください：");
  26. 		scanf("%d",&x);
  27. 		printf("%d\n",x);
  28. 	}
  29. 	while(x<3);
  30.  
  31. 	printf("%d=",x);
  32.  
  33. 	soso(x);
  34.  
  35. 	return 0;
  36. }
  37.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
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2
1974
stdout
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3以上の整数を入力してください：2
3以上の整数を入力してください：1974
1974=2×3×7×47
https://ideone.com/kHYjiZ
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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