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Technology Computing, programming, science, electronics, telecommunications, etc. |
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#1 | |
Snowflake
Join Date: Mar 2006
Location: Dystopia
Posts: 13,136
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triple post
Happy Monkey's suggested code from post #15 also works.
Using the else condition to exit the loop, otherwise prompting for the password at the top of the loop. This is more concise. Quote:
Code:
#include<iostream> #include<cstring> #include<cctype> using namespace std; //Function checks the password for length. (a) bool passLength(char[]); //Function checks the password for a digit. (b) bool containDigit(char[]); const int SIZE = 21; char password[SIZE]; int main() { bool ok=false; while ( ! ok ) { cout << "Please enter a password: "; cin.getline(password, SIZE); if (! passLength(password)) { cout << "Passwords must be at least 6 characters long" << endl; } else if ( ! containDigit(password) ) { cout << "Passwords must include at least on digit (1-9)" << endl; } else { ok=true; } } cout << "Thank you that is a valid password" << endl; //Keep the window open until Enter key is pressed. cout << "\nPress Enter to close window..." << endl; std::cin.get(); return 0; } bool passLength(char password[]) //(a) { int lengthPass = 6; int length = strlen(password); if (lengthPass <= length) return true; else { return false; } } bool containDigit(char password[]) //(b) { int index = 0; int length = strlen(password); for (index = 0; index < length; index++ ) { if (isdigit(password[index])) return true; } return false; }
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