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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	string s;
  6. 	int c=0,d=0;
  7. 	char ch;
  8. 	cin >> s;
  9. 	int n = s.size();
  10. 	if(islower(s[0]))
  11. 	{
  12.  
  13. 		for(int i=1;i<n;i++)
  14. 		{
  15. 			if(isupper(s[i]))
  16. 			{
  17. 				c++;
  18. 			}
  19. 		}
  20. 		if(c == n-1)
  21. 		{
  22. 			s[0] = toupper(s[0]);
  23. 			for(int i=1;i<n;i++)
  24. 			{
  25. 				s[i] = tolower(s[i]);
  26. 			}
  27. 			cout << s << endl;
  28.  
  29. 		}
  30. 		else
  31. 		{
  32. 			cout << s << endl;
  33. 		}
  34.  
  35.  
  36. 	}
  37. 	else if(isupper(s[0])){
  38. 		for(int i=1;i<n;i++)
  39. 		{
  40. 			if(isupper(s[i]))
  41. 			{
  42. 				d++;
  43. 			}
  44. 		}
  45. 		if(n-1==d)
  46. 		{
  47. 			for(int i=0;i<n;i++)
  48. 			{
  49. 				s[i] = tolower(s[i]);
  50. 			}
  51. 			cout << s << endl;
  52. 		}
  53. 		else
  54. 		{
  55. 			cout << s << endl;
  56. 		}
  57. 	}
  58.  
  59. 	return 0;
  60. }
Success #stdin #stdout 0.01s 5320KB
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https://ideone.com/61MILA
language:
C++ (gcc 8.3)
created:
17 hours ago
visibility:
public

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