@ -65,40 +65,71 @@ long long int subtraction(long long int a, long long int b) {
intmain(){
intmain(){
longlongintbin1,bin2,dec,result;
charauswahl1,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);
longlongintbin1,bin2,dec,result;
charauswahl1,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;
}while(auswahl2!='R'&&auswahl2!='r');
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=addition(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=subtraction(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=multiplication(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;
break;
case'Q':
case'Q':
@ -108,8 +139,8 @@ int main() {
default:
default:
printf("Invalid selection. Please enter again.\n");
printf("Invalid selection. Please enter again.\n");