Code:
// arith1.cpp
#include <iostream>
using namespace std;
int main(void) {
int var1, var2, var3;
cout<<"operand 1: ";
cin>>var1;
cout<<"operand 2: ";
cin>>var2;
//Berechnung direkt in cout
cout<<"Multiplikation : " <<var1<< "*"
<<var2<<"="<<(var1*var2)<<'\n';
//Berchnung in var3 zwischenspeichern
var3 = var1 +var2;
cout<<"Addition : " <<var1<< "+"
<<var2<<"="<<var3<< '\n';
//Division duch 0 vermeiden
(!var2) ?var2=1 :var2=var2;
//Berechnung direkt in cout
cout<<"Division : " <<var3<< "/"
<<var2<<"="<<(var3/var2);
//Den rest der division ermitteln
cout<<"(Rest : "<<(var3%var2)<<")\n";
//Neuen wert von var1 zuweisen
var1 = var3 - var2;
cout<<"Subtraktion : "<<var3<<"-"
<<var2<<"="<<var1<<'\n';
return 0;
}