Basic calculator

#1

what is wrong in this code:
#include
using namespace std;
int main(){
char ch;
long long int a,b;
ch=cin.get();
cin>>a>>b;
while((ch!=‘x’)||(ch!=‘X’))
{
switch(ch)
{
case ‘+’:cout<<a+b<<endl;
break;
case ‘-’:cout<<a-b<<endl;
break;
case '’:cout<<ab<<endl;
break;
case ‘/’:cout<<a/b<<endl;
break;
case ‘%’:cout<<a%b<<endl;
break;
default:cout<<“Invalid operation. Try again.”<<endl;
}
ch=cin.get();
cin>>a>>b;

}
return 0;

}

#2

Your Mistakes

  1. don’t use cin.get() because it take whitespaces also
    if input is *
    1
    2
    /
    4
    2
    first cin.get() will take * and then cin.get() takes the newline character ‘\n’ which is present after *

  2. don’t take a and b after every ch
    you don’t have to take a and b if ch is x or any other invalid character

look at modified Code

Modified code

#3

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