diff --git a/Factorial/factorial.c b/Factorial/factorial.c
new file mode 100644
index 0000000..e7d70d7
--- /dev/null
+++ b/Factorial/factorial.c
@@ -0,0 +1,59 @@
+#include<stdio.h>
+#include<stdlib.h>
+struct node{
+	int place;
+	struct node *Llink;
+	struct node *link;
+}*ptr,*now,*header,*pre;
+void main()
+{
+	int i=1,n,carry=0,product;
+	printf("INPUT : ");
+	scanf("%d",&n);
+	now=(struct node*)malloc(sizeof(struct node));
+	now->place=1;
+	now->link=now->Llink=NULL;
+	header=now;
+	while(i<=n)
+	{
+		ptr=header;
+		while(ptr->link!=NULL)
+			ptr=ptr->link;
+		while(ptr!=NULL)
+		{
+			pre=ptr;
+			ptr=ptr->Llink;
+	                product=pre->place*i+carry;
+        	        carry=product/10;
+              		pre->place=product%10;
+		}
+		while(carry>0)
+		{
+		        now=(struct node*)malloc(sizeof(struct node));
+		        now->place=carry%10;
+			now->link=pre;
+			pre->Llink=now;
+		        now->Llink=NULL;
+		        header=now;
+			carry/=10;
+			pre=now;
+		}
+		i++;
+	}
+	ptr=header;
+	printf("%d! : ",n);
+	while(ptr!=NULL)
+	{
+		printf("%d",ptr->place);
+		ptr=ptr->link;
+	}
+	printf("\n");
+	ptr=header;
+	while(ptr!=header)
+	{
+		pre=ptr;
+		ptr=ptr->link;
+		free(pre);
+	}
+	free(pre);
+}
diff --git a/Sorting/Selection_Sort/select.c b/Sorting/Selection_Sort/select.c
new file mode 100644
index 0000000..366af2b
--- /dev/null
+++ b/Sorting/Selection_Sort/select.c
@@ -0,0 +1,28 @@
+/*   Selection Sort  */
+#include<stdio.h>
+void ssort(int a[],int n)
+{
+	int i,j,temp;
+	for(i=0;i<n-1;i++)
+		for(j=i+1;j<n;j++)
+			if(a[i]>a[j])
+			{
+				temp=a[i];
+				a[i]=a[j];
+				a[j]=temp;
+			}
+}
+void main()
+{
+	int a[100],i,n;
+	printf("No of Elements : ");
+	scanf("%d",&n);
+	printf("Enter the Elements : \n");
+	for(i=0;i<n;i++)
+		scanf("%d",&a[i]);
+	ssort(a,n);
+	printf("The Sorted Array : ");
+	for(i=0;i<n;i++)
+		printf("%d ",a[i]);
+	printf("\n");
+}