diff --git a/src/main/c/main_taschenrechner.c b/src/main/c/main_taschenrechner.c
index edbc325..30fa51c 100644
--- a/src/main/c/main_taschenrechner.c
+++ b/src/main/c/main_taschenrechner.c
@@ -89,46 +89,6 @@ int bitwiseXOR(int num1, int num2) {
 }
 
 //..
-
-// scientificmode
-int scientificMode(){
-
-    double num, result;
-
-    int choice;
-
-    printf("Enter a number: ");
-
-    scanf("%lf", &num); // scan the number from user
-    
-    printf("Scientific mode Options:\n");
-    printf("1: Square root:\n");
-    printf("2: Exponential:\n");
-    printf("2: Logarithm:\n");
-    printf("4: Trigonomertic");
-    scanf("%d", &choice); // user choice
-
-    switch(choice) {
-
-        case 1: // Square root
-        break;
-
-        case 2: // Exponential
-        break;
-
-        case 3: // Logarithm
-        break;
-
-        case 4: // Trigonomertic 
-        break;
-    
-        default: printf("Invalid choice. Please try again.\n");
-
-    }
-
-    return result;
-}
-
 // graphMode
 void graphMode() {
     double x, y;
@@ -148,25 +108,6 @@ void graphMode() {
     }
 }
 
-// Programming mode
-
-void programmingMode() {
-
-    int num1, num2, result;
-    char operator;
-
-    printf("Enter first integer: ");
-    scanf("%d", &num1);
-
-    printf("Enter operator (+, -, *, /): ");
-    scanf(" %c", &operator);
-
-    printf("Enter second integer: ");
-    scanf("%d", &num2);
-
-}
-
-
 
 // change mode
 int mode(int userChoice){
diff --git a/src/main/c/programmingMode.c b/src/main/c/programmingMode.c
new file mode 100644
index 0000000..e89a75c
--- /dev/null
+++ b/src/main/c/programmingMode.c
@@ -0,0 +1,23 @@
+// programmingMode
+
+#include <stdio.h>
+#include <math.h>
+
+#include "taschenrechner.h"
+
+
+void programmingMode() {
+
+    int num1, num2, result;
+    char operator;
+
+    printf("Enter first integer: ");
+    scanf("%d", &num1);
+
+    printf("Enter operator (+, -, *, /): ");
+    scanf(" %c", &operator);
+
+    printf("Enter second integer: ");
+    scanf("%d", &num2);
+
+}
diff --git a/src/main/c/scientific.c b/src/main/c/scientific.c
deleted file mode 100644
index 0500106..0000000
--- a/src/main/c/scientific.c
+++ /dev/null
@@ -1,10 +0,0 @@
-// scientific.c
-#include <stdio.h>
-#include <math.h>
-#include "taschenrechner.h"
-
-
-double scientificMode() {
-
-    return 0.0;
-}