diff --git a/src/main/c/programmingMode.c b/src/main/c/programmingMode.c
index e89a75c..c869b99 100644
--- a/src/main/c/programmingMode.c
+++ b/src/main/c/programmingMode.c
@@ -7,7 +7,6 @@
 
 
 void programmingMode() {
-
     int num1, num2, result;
     char operator;
 
@@ -20,4 +19,30 @@ void programmingMode() {
     printf("Enter second integer: ");
     scanf("%d", &num2);
 
-}
+    // Calculation
+    switch (operator) {
+        case '+':
+            result = num1 + num2;
+            break;
+        case '-':
+            result = num1 - num2;
+            break;
+        case '*':
+            result = num1 * num2;
+            break;
+        case '/':
+            if (num2 != 0) {
+                result = num1 / num2;
+            } else {
+                printf("Error: Division by zero\n");
+                result = 0;
+            }
+            break;
+        default:
+            printf("Invalid operator\n");
+            result = 0;
+    }
+
+    // Display the result
+    printf("Result: %d\n", result);
+}
\ No newline at end of file