Password Strength Checker in C++

C++/PasswordStrength/README.md

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+Aim: To check strength of Password in C++
+
+If Password is 8-character long and have uppercase, lowercase , digit and special character then it is Strong
+
+If Password is 6-chacter long with uppercase or Lowercase and special character then it is Moderate
+
+otherwise its Weak

C++/PasswordStrength/checkpassword.cpp

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+#include <iostream>
+
+using namespace std;
+
+void CheckPassword(string& input)   
+{
+   int n = input.length();      //check length of string
+   bool hasLower = false, hasUpper = false;
+   bool hasDigit = false, specialChar = false;
+    for (int i = 0; i < n; i++)       // from character 1 to end of string
+   {
+      if (islower(input[i]))          //check if char is lowercase
+         hasLower = true;
+      else if (isupper(input[i]))     //check if char is uppercase
+         hasUpper = true;
+      else if (isdigit(input[i]))     //check if char is digit
+         hasDigit = true;
+      else                             //check if char is special character
+         specialChar = true;         
+   }
+   cout << " Strength of password: ";
+   if (hasLower && hasUpper && hasDigit && specialChar && (n >= 8))  
+      cout << "Strong" << endl;
+   else if ((hasLower || hasUpper) && specialChar && (n >= 6))
+      cout << "Moderate" << endl;
+   else
+      cout << "Weak" << endl;
+}
+int main() 
+{
+   string str;
+   cout<<"\n Enter Password : ";
+   getline(cin,str);       //get a string input
+   CheckPassword(str);
+   return 0;
+}