diff --git a/cpp.md b/cpp.md
index b83d449..21d5054 100644
--- a/cpp.md
+++ b/cpp.md
@@ -525,3 +525,4 @@ sort(v.begin(), v.end(), greater<int>()); // sorting in the vector in descending
 |#include<graphics.h> | It is used include and facilitate graphical operations in program|
 |#include<bits/stdc++.h> | It is used to include all the standard library files|
 |#include <bits/stdc++.h> | Inlcude all the headers. A Usefull Hack for Competitive Programming|
+|#include <math.h> | It is used to perform several mathematical functions without the intial boilerplate code, all functions in this library take all arguments as DOUBLE data type and returns them also as a DOUBLE data type.|