diff --git a/Loops/CNT_PRM.C b/Loops/CNT_PRM.C
new file mode 100644
index 0000000..f034c93
--- /dev/null
+++ b/Loops/CNT_PRM.C
@@ -0,0 +1,45 @@
+#include<stdio.h>
+#include<conio.h>
+#include<math.h>
+
+int prime(int a)
+{
+int i;
+if(a==1 || a==0)
+	return 0;
+
+for(i=2; i<=sqrt(a); i++)
+{	
+	
+	if(a%i==0)
+		return 0;
+}
+return 1;
+}
+
+int count(int a, int b)
+{
+int c = 0,i;
+for(i=a; i<=b; i++)
+{
+	if(prime(i))
+		c++;
+}
+return c;
+}
+
+void main()
+{
+int a,b;
+clrscr();
+
+printf("Enter the lower number :: ");
+scanf("%d",&a);
+
+printf("Enter the higher number :: ");
+scanf("%d",&b);
+
+printf("Number of prime numbers :: %d",count(a,b));
+getch();
+}
+
diff --git a/TREETRAV.C b/TREETRAV.C
new file mode 100644
index 0000000..e5d04ff
--- /dev/null
+++ b/TREETRAV.C
@@ -0,0 +1,68 @@
+#include<stdio.h>
+#include<conio.h>
+struct node
+{ struct node* left; int data; struct node* right; };
+
+struct node* create(int data)
+{
+struct node* newNode=(struct node*)malloc(sizeof(struct node));
+newNode->data = data;
+newNode->left='\0';
+newNode->right = '\0';
+return newNode;
+}
+
+struct node* insert(struct node* t, int data)
+{
+if(t=='\0') return create(data);
+if(data < t->data)
+	t->left = insert(t->left, data);
+else if(data > t->data)
+	t->right = insert(t->right, data);
+return t;
+}
+
+void inorder(struct node* t)
+{
+if(t=='\0') return;
+inorder(t->left);
+printf("%d ",t->data);
+inorder(t->right);
+}
+
+void preorder(struct node* t)
+{
+if(t=='\0') return;
+printf("%d ",t->data);
+preorder(t->left);
+preorder(t->right);
+}
+
+void postorder(struct node* t)
+{
+if(t=='\0') return;
+postorder(t->left);
+postorder(t->right);
+printf("%d ",t->data);
+}
+
+void main()
+{
+struct node *root='\0';
+clrscr();
+root = insert(root,8);
+insert(root,3);
+insert(root,1);
+insert(root,6);
+insert(root,7);
+insert(root,10);
+insert(root,14);
+insert(root,4);
+printf("Inorder\n");
+inorder(root);
+printf("\nPreorder\n");
+preorder(root);
+printf("\nPostorder\n");
+postorder(root);
+getch();
+}
\ No newline at end of file