fork download
copy 
  1. #include <iostream>
  2. #include <math.h>
  3. using namespace std;
  4.  
  5. int main(int argc, char** argv) {
  6. 	int length;
  7. 	int max;
  8. 	int count=0;
  9.  
  10. 	cout<<"請輸入位數:"; 
  11. 	cin>>length;
  12. 	//設定最大值Max  Ex:3位數 -> Max=999 
  13. 	for(int i=0;i<length;i++)
  14. 	{
  15. 		max+=9*pow(10,i);
  16. 	}
  17. 	//從 1 開始到 Max 
  18. 	for (int i=1;i<=max;i++)
  19. 	{
  20. 		int num[length]; 
  21. 		int temp=i;		
  22. 		//分解各位數字丟到 array[] 
  23. 		for (int a=0;a<length;a++)  
  24. 		{
  25. 			num[a]=temp%10;
  26. 			temp/=10;	
  27. 		}
  28. 		//檢查是否有重複的數字 
  29. 		bool repeat=0;	
  30. 		for(int i=0;i<length-1;i++)
  31. 		{
  32. 			for(int j=i+1;j<length;j++)
  33. 			{
  34. 				if(num[i]==num[j]) repeat=1;
  35. 			}
  36. 		}
  37. 		//若沒重複則輸出數字 i，若有則跳過 i 
  38. 		if(repeat==0)
  39. 		{
  40. 			cout<<i<<"\t"; 
  41. 			count++;
  42. 			if(count%5==0) cout<<endl;
  43. 		}
  44. 		else continue;			
  45. 	}
  46. 	system("pause");
  47. 	return 0;
  48. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
copy 
Standard input is empty
compilation info 
prog.cpp:46:2: error: use of undeclared identifier 'system'
        system("pause");
        ^
1 error generated.
stdout
copy 
Standard output is empty
https://ideone.com/reSKql
language:
C++14 (clang 8.0)
created:
9 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!