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  1. #include <stdio.h>
  2.  
  3. void bunkai(int a){
  4. int bunbo,amari;
  5. if(a==1)
  6.   return;
  7. for(bunbo=2;bunbo<=a;bunbo++){     //割り切れる数を探す
  8.     amari=a%bunbo;
  9.   if((amari==0)&&(a/bunbo==1))         //最後の数のとき×を表示させない
  10.     printf("%d",bunbo);
  11.   else if(amari==0){
  12.     printf("%d×",bunbo);
  13.     bunkai(a/bunbo);
  14.     return;                                             //戻ってきたときforが続いてしまうので終わらせる
  15. }
  16. }
  17. }
  18. int main(void) {
  19. int n;
  20. printf("3以上の整数を入力してください\n");
  21. scanf("%d",&n);
  22. printf("%d=",n);
  23. bunkai(n);
  24. 	return 0;
  25. }
  26.  
Success #stdin #stdout 0s 5292KB
comments (?)
stdin
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60
stdout
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3以上の整数を入力してください
60=2×2×3×5
https://ideone.com/H7GS1N
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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