diff --git a/src/main/c/BasicMode.c b/src/main/c/BasicMode.c
index fa617f9..6ee8e62 100644
--- a/src/main/c/BasicMode.c
+++ b/src/main/c/BasicMode.c
@@ -62,85 +62,3 @@ long long int subtractionbin(long long int a, long long int b) {
 
     return dec2;
 }
-
-
-int main() {
-    long long int bin1, bin2, dec, result;
-    char auswahl1, auswahl2;
-
-    do {
-        printf("what do you want to do?(A for conversion from decimal base to binary base ,B for conversion from binary base to decimal base ,C for Operation in binary base, Q for stop):");
-        scanf(" %c", &auswahl1);
-        switch (auswahl1) {
-        case 'A':
-        case 'a':
-            printf("Enter a decimal number: ");
-            scanf("%lld", &dec);
-            bin1 = DecToBin(dec);
-            printf("%lld in decimal = %lld in binary\n", dec, bin1);
-            break;
-
-        case 'B':
-        case 'b':
-            printf("Enter a binary number: ");
-            scanf("%lld", &bin1);
-            dec = BinToDec(bin1);
-            printf("%lld in binary = %lld in decimalprintf\n");
-            break;
-
-        case 'C':
-        case 'c':
-            do {
-                printf("which operation would you like to have?(+ for addition, - for subtraction,* for multiplication and r for return :");
-                scanf(" %c", &auswahl2);
-                switch (auswahl2) {
-                case '+':
-                    printf("enter the first binary number: ");
-                    scanf("%lld", &bin1);
-                    printf("enter the second binary number: ");
-                    scanf("%lld", &bin2);
-                    result = additionbin(bin1, bin2);
-
-                    printf("%lld+%d = %lld\n", bin1, bin2, result);
-                    break;
-                case '-':
-                    printf("enter the first binary number: ");
-                    scanf("%lld", &bin1);
-                    printf("enter the second binary number: ");
-                    scanf("%lld", &bin2);
-                    result = subtractionbin(bin1, bin2);
-
-                    printf("%lld-%lld = %lld\n", bin1, bin2, result);
-                    break;
-                case '*':
-                    printf("enter the first binary number: ");
-                    scanf("%lld", &bin1);
-                    printf("enter the second binary number: ");
-                    scanf("%lld", &bin2);
-                    result = multiplicationbin(bin1, bin2);
-
-                    printf("%lld*%d = %lld\n", bin1, bin2, result);
-                    break;
-
-                case 'R':
-                case 'r':
-                    printf("return.\n");
-                    break;
-                default:
-                    printf("Invalid selection. Please enter again.\n");
-                }
-            } while (auswahl2 != 'R' && auswahl2 != 'r');
-
-            break;
-        case 'Q':
-        case 'q':
-            printf("The programme is terminated.\n");
-            break;
-        default:
-            printf("Invalid selection. Please enter again.\n");
-        }
-    } while (auswahl1 != 'Q' && auswahl1 != 'q');
-
-
-    return 0;
-}