diff --git a/C++/Question-1.cpp b/C++/Question-1.cpp
index 3373a60..7dd4a4c 100644
--- a/C++/Question-1.cpp
+++ b/C++/Question-1.cpp
@@ -3,11 +3,11 @@
 
 void bubbleSort(int arr[], int n) {
     for (int i = 0; i < n; i++) {
-        for (int j = i; j < n - i - 1; j++) {
-            if (arr[j] < arr[j + 1]) {
-                int temp = arr[j];
-                arr[j] = arr[j + 1];
-                arr[j + 1] = temp;
+        for (int j = i+1; j < n; j++) {
+            if (arr[i]>arr[j]) {
+                int temp = arr[i];
+                arr[i] = arr[j];
+                arr[j] = temp;
             }
         }
     }
@@ -16,8 +16,8 @@ void bubbleSort(int arr[], int n) {
 int main() {
     int arr[] = { 64, 34, 25, 12, 22, 11, 90 };
     int n = sizeof(arr) / sizeof(arr[0]);
-    bubbleSort(arr, n);
     std::cout << "Sorted array: ";
+    bubbleSort(arr, n);
     for (int i = 0; i < n; i++) {
         std::cout << arr[i] << " ";
     }
diff --git a/C++/Question-1.exe b/C++/Question-1.exe
new file mode 100644
index 0000000..da3f1eb
Binary files /dev/null and b/C++/Question-1.exe differ
diff --git a/C++/Question-2.cpp b/C++/Question-2.cpp
index b2e8ef2..4601a91 100644
--- a/C++/Question-2.cpp
+++ b/C++/Question-2.cpp
@@ -4,11 +4,11 @@
 #include <string>
 
 double usdToEur(double amount) {
-    return amount * 0.8;
+    return amount * 0.84375;
 }
 
 double eurToUsd(double amount) {
-    return amount * 1.2;
+    return amount * 1.185;
 }
 
 int main() {
@@ -20,15 +20,15 @@ int main() {
     std::cout << "Enter currency (USD/EUR): ";
     std::cin >> currency;
 
-    if (currency == "USD") {
-        double convertedAmount = usdToEur(amount);
-        std::cout << "Amount in EUR: " << convertedAmount << std::endl;
-    } else if (currency == "EUR") {
-        double convertedAmount = usdToEur(amount);
-        std::cout << "Amount in USD: " << convertedAmount << std::endl;
-    } else {
-        std::cout << "Invalid currency." << std::endl;
-    }
-
+   
+if (currency == "USD") {
+    double convertedAmount = usdToEur(amount);
+    std::cout << "Amount in EUR: " << convertedAmount << std::endl;
+} else if (currency == "EUR") {
+    double convertedAmount = eurToUsd(amount); // Corrected function call
+    std::cout << "Amount in USD: " << convertedAmount << std::endl;
+} else {
+    std::cout << "Invalid currency." << std::endl;
+}
     return 0;
 }
diff --git a/C++/Question-2.exe b/C++/Question-2.exe
new file mode 100644
index 0000000..53935eb
Binary files /dev/null and b/C++/Question-2.exe differ
diff --git a/C++/Question-3.cpp b/C++/Question-3.cpp
index e6116b7..021dc7c 100644
--- a/C++/Question-3.cpp
+++ b/C++/Question-3.cpp
@@ -11,9 +11,9 @@ void guessNumber() {
         std::cout << "Guess the number (between 1 and 100): ";
         std::cin >> guess;
 
-        if (guess > number) {
+        if (guess <= number) {
             std::cout << "Too low! Try again." << std::endl;
-        } else if (guess <= number) {
+        } else if (guess < number) {
             std::cout << "Too high! Try again." << std::endl;
         } else {
             std::cout << "Congratulations! You guessed the number." << std::endl;
diff --git a/C++/Question-3.exe b/C++/Question-3.exe
new file mode 100644
index 0000000..1936b8a
Binary files /dev/null and b/C++/Question-3.exe differ
diff --git a/C++/Question-4.cpp b/C++/Question-4.cpp
index 83db22b..9f3d027 100644
--- a/C++/Question-4.cpp
+++ b/C++/Question-4.cpp
@@ -1,24 +1,42 @@
 // Password should have atleast 8 characters
 // Password must have atleast one lowercase character, one uppercase character and a special character
 
-#include <iostream>
-#include <string>
-
-bool checkPassword(std::string password) {
-    return password.length() >= 8;
-}
-
-int main() {
-    std::string password;
 
-    std::cout << "Enter a password: ";
-    std::getline(std::cin, password);
-
-    if (checkPassword(password)) {
-        std::cout << "Password is valid." << std::endl;
-    } else {
-        std::cout << "Password is too short." << std::endl;
-    }
+#include <iostream>
+using namespace std;
+int main()
+{
+  int low_case=0, up_case=0, digit=0, special=0;
+  string pass;
+  cout<<"Enter Password"<<endl;
+  
+  cin>>pass;
+  int l=pass.length(),i;
+  
+  for(i=0;i<l;i++)
+  {
+    if(islower(pass[i]))
+      low_case=1;
+    if(isupper(pass[i]))
+      up_case=1;
+    if(isdigit(pass[i]))
+      digit=1;
+    if(!isalpha(pass[i]) && !isdigit(pass[i]))
+      special=1;  
+  }
+  
+  if(low_case && up_case && digit && special && l>=8)
+    cout<<"strong password."<<endl;
+  else if(!up_case)
+    cout<<"please include upper case letter"<<endl;
+else if(!low_case)
+cout<<" please include lower case"<<endl;
+else if(!digit)
+cout<<"please include digits"<<endl;
+else if(!special)
+cout<<"please include special characters"<<endl;
+else 
+cout<<"too short password"<<endl;
 
-    return 0;
-}
+  return 0;
+}
\ No newline at end of file
diff --git a/C++/Question-4.exe b/C++/Question-4.exe
new file mode 100644
index 0000000..936ce09
Binary files /dev/null and b/C++/Question-4.exe differ
diff --git a/C++/Question-5.cpp b/C++/Question-5.cpp
index 036a83c..72734d9 100644
--- a/C++/Question-5.cpp
+++ b/C++/Question-5.cpp
@@ -1,19 +1,24 @@
 #include <iostream>
-
+using namespace std;
 // Function to calculate the factorial of a number
 int factorial(int n) {
+    if(n<0){
+        return -1;
+    }
+    if(n==0||n==1)
+    return 1;
+
         return n * factorial(n - 1);
 }
 
 int main() {
     int number;
     
-    std::cout << "Enter a number: ";
-    std::cin >> number;
-    
+    cout << "Enter a number: ";
+    cin >> number;
     int result = factorial(number);
     
-    std::cout << "The factorial of " << number << " is " << result << std::endl;
+    cout << "The factorial of " << number << " is " << result << endl;
     
     return 0;
 }
\ No newline at end of file
diff --git a/C++/Question-5.exe b/C++/Question-5.exe
new file mode 100644
index 0000000..a4b3877
Binary files /dev/null and b/C++/Question-5.exe differ
diff --git a/C++/tempCodeRunnerFile.cpp b/C++/tempCodeRunnerFile.cpp
new file mode 100644
index 0000000..9cf5b08
--- /dev/null
+++ b/C++/tempCodeRunnerFile.cpp
@@ -0,0 +1,2 @@
+// Password should have atleast 8 characters
+// Password must have atleast one lowercase character, one uppercase character and a special character
\ No newline at end of file