diff --git a/bs.cpp b/bs.cpp
new file mode 100644
index 0000000..98ed7a6
--- /dev/null
+++ b/bs.cpp
@@ -0,0 +1,35 @@
+#include<iostream>
+using namespace std;
+
+
+int binarySearch(int arr[], int l, int r, int x)
+{
+	if (r >= l)
+	{
+		int mid = l + (r - l)/2;
+		if (arr[mid] == x) return mid;
+		if (arr[mid] > x) return binarySearch(arr, l, mid-1, x);
+		return binarySearch(arr, mid+1, r, x);
+	}
+
+	return -1;
+}
+
+int main(void)
+{
+	int arr[] = {2, 3, 4, 10, 40};
+	int n = sizeof(arr)/ sizeof(arr[0]);
+
+	printf("Check if a particular key is present\n");
+	int key;
+	scanf("%d", &key);
+
+	int result = binarySearch(arr, 0, n-1, key);
+	if (result == -1) {
+		printf("Element is not present in array\n");
+	}
+	else {
+		 printf("Element is present at index %d\n", result);
+	}
+	return 0;
+}
diff --git a/bs.txt b/bs.txt
new file mode 100644
index 0000000..c8aa840
--- /dev/null
+++ b/bs.txt
@@ -0,0 +1,32 @@
+
+int binarySearch(int arr[], int l, int r, int x)
+{
+	if (r >= l)
+	{
+		int mid = l + (r - l)/2;
+		if (arr[mid] == x) return mid;
+		if (arr[mid] > x) return binarySearch(arr, l, mid-1, x);
+		return binarySearch(arr, mid+1, r, x);
+	}
+
+	return -1;
+}
+
+int main(void)
+{
+	int arr[] = {2, 3, 4, 10, 40};
+	int n = sizeof(arr)/ sizeof(arr[0]);
+
+	printf("Check if a particular key is present\n");
+	int key;
+	scanf("%d", &key);
+
+	int result = binarySearch(arr, 0, n-1, key);
+	if (result == -1) {
+		printf("Element is not present in array\n");
+	}
+	else {
+		 printf("Element is present at index %d\n", result);
+	}
+	return 0;
+}