refactoring: Extracted the logarithm options from the executeLogarithmFunction and move them into getLogarithmChoice function

src/main/c/scientificMode.c

@@ -4,17 +4,26 @@
 #include <math.h>
 #include "taschenrechner.h"
 
-// Logarithm
-void executeLogarithmFunction(double num) {
+// Choice for Logarithm
+int getLogarithmChoice() {
     int logChoice;
-
-    do {
     printf("Logarithm Options:\n");
     printf("1: Logarithm (base 10)\n");
     printf("2: Natural Logarithm (ln)\n");
     printf("3: Logarithm (base 2)\n");
     printf("0: Exit Logarithm Menu\n");
     scanf("%d", &logChoice);
+    return logChoice;
+}
+
+
+// Logarithm
+void executeLogarithmFunction(double num) {
+    int logChoice;
+
+    do {
+        
+        logChoice = getLogarithmChoice();
         
         switch (logChoice) {
             case 1: // Logarithm (base 10)