diff --git a/CODE in C/Data Structures/node_delete.cpp b/CODE in C/Data Structures/node_delete.cpp
new file mode 100644
index 0000000..31e1505
--- /dev/null
+++ b/CODE in C/Data Structures/node_delete.cpp	
@@ -0,0 +1,89 @@
+ 
+#include <bits/stdc++.h> 
+using namespace std; 
+
+/* Link list node */
+struct Node { 
+	int data; 
+	struct Node* next; 
+}; 
+
+// Fucntion to delete the node without head 
+void deleteNodeWithoutHead(struct Node* pos) 
+{ 
+	if (pos == NULL) // If linked list is empty 
+		return; 
+	else { 
+
+		if (pos->next == NULL) { 
+			printf("This is last node, require head, can't be freed\n"); 
+			return; 
+		} 
+
+		struct Node* temp = pos->next; 
+
+		// Copy data of the next node to current node 
+		pos->data = pos->next->data; 
+
+		// Perform conventional deletion 
+		pos->next = pos->next->next; 
+
+		free(temp); 
+	} 
+} 
+
+// Function to print the linked list 
+void print(Node* head) 
+{ 
+	Node* temp = head; 
+	while (temp) { 
+		cout << temp->data << " -> "; 
+		temp = temp->next; 
+	} 
+
+	cout << "NULL"; 
+} 
+
+void push(struct Node** head_ref, int new_data) 
+{ 
+	/* allocate node */
+	struct Node* new_node = new Node(); 
+
+	/* put in the data */
+	new_node->data = new_data; 
+
+	/* link the old list off the new node */
+	new_node->next = (*head_ref); 
+
+	/* move the head to point to the new node */
+	(*head_ref) = new_node; 
+} 
+
+// Driver Code 
+int main() 
+{ 
+	/* Start with the empty list */
+	struct Node* head = NULL; 
+
+	// create linked 35->15->4->20 
+	push(&head, 20); 
+	push(&head, 4); 
+	push(&head, 15); 
+	push(&head, 35); 
+	cout << "Initial Linked List: \n"; 
+	print(head); 
+	cout << endl 
+		<< endl; 
+
+	// Delete 15 without sending head 
+	Node* del = head->next; 
+	deleteNodeWithoutHead(del); 
+
+	// Print the final linked list 
+	cout << "Final Linked List after deletion of 15:\n"; 
+	print(head); 
+
+	return 0; 
+
+	// This code has been contributed by Striver 
+} 
diff --git a/CODE in C/Mathematical/Factorial.c b/CODE in C/Mathematical/Factorial.c
new file mode 100644
index 0000000..3f5bc74
--- /dev/null
+++ b/CODE in C/Mathematical/Factorial.c	
@@ -0,0 +1,16 @@
+#include<stdio.h>
+long int multiplyNumbers(int n);
+int main() {
+    int n;
+    printf("Enter a positive integer: ");
+    scanf("%d",&n);
+    printf("Factorial of %d = %ld", n, multiplyNumbers(n));
+    return 0;
+}
+
+long int multiplyNumbers(int n) {
+    if (n>=1)
+        return n*multiplyNumbers(n-1);
+    else
+        return 1;
+}
diff --git a/CODE in C/Mathematical/factorial_in_c++.cpp b/CODE in C/Mathematical/factorial_in_c++.cpp
new file mode 100644
index 0000000..81fbce5
--- /dev/null
+++ b/CODE in C/Mathematical/factorial_in_c++.cpp	
@@ -0,0 +1,24 @@
+#include<iostream>
+using namespace std;
+
+int factorial(int n);
+
+int main()
+{
+    int n;
+
+    cout << "Enter a positive integer: ";
+    cin >> n;
+
+    cout << "Factorial of " << n << " = " << factorial(n);
+
+    return 0;
+}
+
+int factorial(int n)
+{
+    if(n > 1)
+        return n * factorial(n - 1);
+    else
+       return 1;
+ }