diff --git a/PARTICIPANTS.md b/PARTICIPANTS.md
index 5a2e2f4..d6f43eb 100644
--- a/PARTICIPANTS.md
+++ b/PARTICIPANTS.md
@@ -142,3 +142,11 @@
 - 🔭 Connect with me: **[Piyushjar](https://github.com/piyushjar))**
 
 ---
+### Connect with me:
+
+<img align="right" src="https://avatars3.githubusercontent.com/pratyushraj7?size=100" width="100px;" alt=""/>
+
+- 👨‍💻 My name is **Pratyush**
+- 🌱 I’m a JavaScript Developer.
+- 📫 Reach me: **pratyushraj7@gmail.com**
+- 🔭 Connect with me: **[pratyushraj7](https://github.com/pratyushraj7))**
diff --git a/cpp/Greatest-English-Letter-in-Upper-and-Lower-Case.cpp b/cpp/Greatest-English-Letter-in-Upper-and-Lower-Case.cpp
new file mode 100644
index 0000000..29a5a9a
--- /dev/null
+++ b/cpp/Greatest-English-Letter-in-Upper-and-Lower-Case.cpp
@@ -0,0 +1,23 @@
+class Solution {
+public:
+    string greatestLetter(string s) {
+        string str = "";
+        unordered_map<char,int> map;
+        for(char c : s){
+            map[c]++;
+        }
+        
+        sort(s.begin(), s.end());
+        
+        for(int i=s.size()-1 ; i>=0 ; i--){
+            char a = tolower(s[i]);
+            char b = toupper(s[i]);
+            
+            if(map.find(a) != map.end() and map.find(b) != map.end()){
+                str = b;
+                break;
+            }
+        }
+        return str;
+    }
+};