diff --git a/SimpleCalculator/README.md b/SimpleCalculator/README.md
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+# Simple Calculator (C++)
+
+This is a basic calculator program written in C++.  
+It takes two integers and an operator (`+`, `-`, `*`, `/`) as input and displays the result.
+
+---
+
+## 🔹 How to Compile and Run
+
+1. Open terminal in the `SimpleCalculator` folder.
+2. Compile the program:
+   ```bash
+   g++ main.cpp -o main.exe
diff --git a/SimpleCalculator/main.cpp b/SimpleCalculator/main.cpp
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+#include <iostream>
+using namespace std;
+
+int main() {
+    int a, b;
+    char op;
+
+    // Ask user for input
+    cout << "Enter expression (example: 5 + 3): ";
+    cin >> a >> op >> b;
+
+    // Perform calculation based on operator
+    switch(op) {
+        case '+': 
+            cout << "Result = " << a + b << endl; 
+            break;
+        case '-': 
+            cout << "Result = " << a - b << endl; 
+            break;
+        case '*': 
+            cout << "Result = " << a * b << endl; 
+            break;
+        case '/': 
+            if (b != 0) 
+                cout << "Result = " << a / b << endl;
+            else 
+                cout << "Error: Division by zero!" << endl;
+            break;
+        default: 
+            cout << "Invalid operator!" << endl;
+    }
+
+    return 0; // end of program
+}
diff --git a/SimpleCalculator/main.exe b/SimpleCalculator/main.exe
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