I see what you're trying to do here but you never even ask the user for the second number. You also never used "cDoagain". I fixed it up so there's no errors but it won't do what you want it to. I suggest actually learning how to do "Hello World" before you try doing this.
Indentation also makes things easier.
[php]
#include<iostream>
using namespace std;
int main(void)
{
system("TITLE Applesouce's Taschenrechner");
system("COLOR 2");
double dfirstnumber;
double dsecondnumber;
char cDoagain;
char cChar;
do
{
system("CLS");
cout << "Bitte geben Sie die erste Zahl ein die Sie verwenden möchten" << endl;
cin >> dfirstnumber;
cout << "Bitte geben Sie das Rechenzeichen ein das sie benutzen möchten" << "(+,-,* und /)" << endl;
cin >> cChar;
cout << "Bitte geben Sie die zweite Zahl ein die Sie verwenden möchten" << endl;
switch (cChar)
{
case '+' :
cout << "Die Antwort ist: " << dfirstnumber << " + " << dsecondnumber << " = " << (dfirstnumber + dsecondnumber) << endl;
break;
case '-' :
cout << "Die Antwort ist: " << dfirstnumber << " - " << dsecondnumber << " = " << (dfirstnumber - dsecondnumber) << endl;
break;
case '*' :
cout << "Die Antwort ist: " << dfirstnumber << " * " << dsecondnumber << " = " << (dfirstnumber * dsecondnumber) << endl;
break;
case 'x' :
cout << "Die Antwort ist: " << dfirstnumber << " x " << dsecondnumber << " = " << (dfirstnumber * dsecondnumber) << endl;
break;
case 'X' :
cout << "Die Antwort ist: " << dfirstnumber << " X " << dsecondnumber << " = " << (dfirstnumber * dsecondnumber) << endl;
break;
case '/' :
if(dsecondnumber == 0)
{
cout << "Dies ist eine ungültige Eingabe" << endl;
}else{
cout << "Die Antwort ist: " << dfirstnumber << " / " << dsecondnumber << " = " << (dfirstnumber / dsecondnumber) << endl;
break;
}
default:
cout << "Dies ist eine ungültige Eingabe" << endl;
break;
}
}while(true);
}
[/php]
Originally Posted by Applesouce
