From c828e3d8dd2eac62870660efd755ee77140a814e Mon Sep 17 00:00:00 2001
From: Avi Sharma <avish13501@gmail.com>
Date: Fri, 1 Oct 2021 19:17:23 +0530
Subject: [PATCH] Added password generator

---
 CPP Programs/passwordgenerator.cpp | 105 +++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 CPP Programs/passwordgenerator.cpp

diff --git a/CPP Programs/passwordgenerator.cpp b/CPP Programs/passwordgenerator.cpp
new file mode 100644
index 0000000..60ed9ee
--- /dev/null
+++ b/CPP Programs/passwordgenerator.cpp	
@@ -0,0 +1,105 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+int x = 3251;
+int Random(int limit) {
+    x = ((x * x) / 100) % 10000;
+    return x % limit;
+}
+
+void generate_password(int len) {
+    string pass = "";
+    string alpha = "abcdefghijklmnopqrstuvwxyz";
+    string Alpha = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+    string spchar = "$*#!%&@";
+    string nums = "0123456789";
+
+    int cnt = 0, cnt_alpha = 0, cnt_Alpha = 0, cnt_sp = 0, cnt_nums = 0;
+    int temp = Random(26);
+    pass += alpha[temp];
+    cnt_alpha++;
+
+    while (cnt < len - 2) {
+        int turn = Random(4);
+        switch (turn) {
+        case 0:
+            if ((cnt_Alpha == 1) && (cnt_sp < 1 || cnt_alpha < 2 || cnt_nums < 1))
+                break;
+            else {
+                temp = Random(26);
+                pass += Alpha[temp];
+                cnt++;
+                cnt_Alpha++;
+                break;
+            }
+        case 1:
+            if ((cnt_alpha == 2) && (cnt_sp < 1 || cnt_Alpha < 1 || cnt_nums < 1))
+                break;
+            else {
+                temp = Random(26);
+                pass += alpha[temp];
+                cnt++;
+                cnt_alpha++;
+                break;
+            }
+        case 2:
+            if ((cnt_nums == 1) && (cnt_Alpha < 1 || cnt_sp < 1 || cnt_alpha < 2))
+                break;
+            else {
+                temp = Random(10);
+                pass += nums[temp];
+                cnt++;
+                cnt_nums++;
+                break;
+            }
+        case 3:
+            if ((cnt_sp == 1) && (cnt_Alpha < 1 || cnt_alpha < 2 || cnt_nums < 1))
+                break;
+            else {
+                temp = Random(7);
+                pass += spchar[temp];
+                cnt++;
+                cnt_sp++;
+                break;
+            }
+        }
+    }
+    temp = Random(26);
+    pass += Alpha[temp];
+
+    cout << "\n\n";
+    cout << "\n\t\tPASSWORD: " << pass << endl;
+    cout << "\n\n\t";
+    system("PAUSE");
+    system("cls");
+}
+
+int main() {
+    int ch, len;
+    system("cls");
+    do {
+        cout << "\n";
+        cout << "\t\tRANDOM PASSWROD GENERATOR\n";
+        cout << "\n\n\n";
+        cout << "\t1. Generate Password\n\t2. Exit\n\n\tEnter your choice: ";
+        cin >> ch;
+
+        if (ch == 1) {
+            cout << "\n\tEnter Required Length: ";
+            cin >> len;
+            if (len < 6 || len > 32) {
+                cout << "\n\t\tERROR!!\n\t(Password should contain at least 6 characters and at max 32 characters) \n\t";
+                system("PAUSE");
+                system("cls");
+            }
+            else
+                generate_password(len);
+        }
+        else if (ch != 2) {
+            cout << "\n\tINVALID CHOICE!!\n\t";
+            system("PAUSE");
+            system("cls");
+        }
+
+    } while (ch != 2);
+}