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  1. // Wyatt Carey					    CS1A				 Chapter 10, P. 589, #12
  2. /*******************************************************************************
  3.  * Password Verifier
  4.  * _____________________________________________________________________________
  5.  * This program asks for a password to be created. The password entered must 
  6.  * meet the criteria, otherwise it will dislpay an error message. The program 
  7.  * use character testing for the password to meet it's criteria.
  8.  * _____________________________________________________________________________
  9.  * 
  10.  * INPUTS
  11.  * character testing (cctype functions)
  12.  * OUTPUTS
  13.  *	password or error message.
  14.  ******************************************************************************/
  15. #include <iostream>
  16. #include <cctype>
  17. using namespace std;
  18.  
  19. // Function Prototypes.
  20. bool passNum(char [], int);
  21.  
  22. int main() 
  23. {
  24. 	// Array settings.
  25. 	const int SIZE  = 6;		// Size of the password.
  26. 	char password[SIZE];		// To hold the password input.
  27.  
  28. 	// Ask for the password to be entered.
  29. 	cout << "\tPassword Criteria\n";
  30. 	cout << "Enter your password as such: LLlNNN\n";
  31. 	cout << "L = uppercase, l = lowercase, N = number\n";
  32. 	cin.getline(password, SIZE);
  33.  
  34. 	// Password validation
  35. 	if (passNum(password, SIZE))
  36. 		cout << "Password accepted.\n";
  37. 	else
  38. 	{
  39. 		cout << "\tINCORRECT PASSWORD\n";
  40. 		cout << "Enter password as such: LLlNNN";
  41. 	}
  42. 	return 0;
  43. }
  44.  
  45. //******************************************************************************
  46. // passNum definition: This function will determine whether testNum parameter  *
  47. // holds a valid input password. The size parameter is the size of the passNum *
  48. // array.																	   *
  49. //******************************************************************************
  50.  
  51. bool passNum(char testNum[], int size)
  52. {
  53. 	int count;		// Loop counter.
  54.  
  55. 	// Test the first two characters of the password.
  56. 	for (count = 0; count < 2; count++)
  57. 	{
  58. 		if (!isupper(testNum[count]))
  59. 			return false;
  60. 	}
  61.  
  62. 	// Test the lowercase letter.
  63. 	for (count = 0; count <= 1; count++)
  64. 	{
  65. 		if (!islower(testNum[count]))
  66. 			return false;
  67. 	}
  68.  
  69. 	// Test the last remaining three digits in the password.
  70. 	for (count = 0; count < 3; count++)
  71. 	{
  72. 		if (!isdigit(testNum[count]))
  73. 			return false;
  74. 	}
  75. 	return true;
  76. }
Success #stdin #stdout 0.01s 5284KB
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	Password Criteria
Enter your password as such: LLlNNN
L = uppercase, l = lowercase, N = number
	INCORRECT PASSWORD
Enter password as such: LLlNNN
https://ideone.com/McaqWM
language:
C++ (gcc 8.3)
created:
11 days ago
visibility:
public

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